diff --git a/Magento/Sniffs/Less/AvoidIdSniff.php b/Magento/Sniffs/Less/AvoidIdSniff.php
deleted file mode 100644
index ae0c7e23..00000000
--- a/Magento/Sniffs/Less/AvoidIdSniff.php
+++ /dev/null
@@ -1,100 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class AvoidIdSniff
- *
- * Ensure that id selector is not used
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#types
- */
-class AvoidIdSniff implements Sniff
-{
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * Tokens that can appear in a selector
-     *
-     * @var array
-     */
-    private $selectorTokens = [
-        T_HASH,
-        T_WHITESPACE,
-        T_STRING_CONCAT,
-        T_OPEN_PARENTHESIS,
-        T_CLOSE_PARENTHESIS,
-        T_OPEN_SQUARE_BRACKET,
-        T_CLOSE_SQUARE_BRACKET,
-        T_DOUBLE_QUOTED_STRING,
-        T_CONSTANT_ENCAPSED_STRING,
-        T_DOUBLE_COLON,
-        T_COLON,
-        T_EQUAL,
-        T_MUL_EQUAL,
-        T_OR_EQUAL,
-        T_STRING,
-        T_NONE,
-        T_DOLLAR,
-        T_GREATER_THAN,
-        T_PLUS,
-        T_NS_SEPARATOR,
-        T_LNUMBER,
-    ];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_HASH];
-    }
-
-    /**
-     * @inheritdoc
-     *
-     * Will flag any selector that looks like the following:
-     * #foo[bar],
-     * #foo[bar=bash],
-     * #foo[bar~=bash],
-     * #foo[bar$=bash],
-     * #foo[bar*=bash],
-     * #foo[bar|=bash],
-     * #foo[bar='bash'],
-     * #foo:hover,
-     * #foo:nth-last-of-type(n),
-     * #foo::before,
-     * #foo + div,
-     * #foo > div,
-     * #foo ~ div,
-     * #foo\3Abar ~ div,
-     * #foo\:bar ~ div,
-     * #foo.bar .baz,
-     * div#foo {
-     *     blah: 'abc';
-     * }
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-
-        // Find the next non-selector token
-        $nextToken = $phpcsFile->findNext($this->selectorTokens, $stackPtr + 1, null, true);
-
-        // Anything except a { or a , means this is not a selector
-        if ($nextToken !== false && in_array($tokens[$nextToken]['code'], [T_OPEN_CURLY_BRACKET, T_COMMA])) {
-            $phpcsFile->addWarning('Id selector is used', $stackPtr, 'IdSelectorUsage');
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/BracesFormattingSniff.php b/Magento/Sniffs/Less/BracesFormattingSniff.php
deleted file mode 100644
index f56fe3e3..00000000
--- a/Magento/Sniffs/Less/BracesFormattingSniff.php
+++ /dev/null
@@ -1,88 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-use PHP_CodeSniffer\Util\Tokens;
-
-/**
- * Class BracesFormattingSniff
- *
- * Ensure there is a single blank line after the closing brace of a class definition
- *
- * @see Squiz_Sniffs_CSS_ClassDefinitionClosingBraceSpaceSniff
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#braces
- */
-class BracesFormattingSniff implements Sniff
-{
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_OPEN_CURLY_BRACKET, T_CLOSE_CURLY_BRACKET];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-
-        if (T_OPEN_CURLY_BRACKET === $tokens[$stackPtr]['code']) {
-            if (TokenizerSymbolsInterface::WHITESPACE !== $tokens[$stackPtr - 1]['content']) {
-                $phpcsFile->addWarning('Space before opening brace is missing', $stackPtr, 'SpacingBeforeOpen');
-            }
-
-            return;
-        }
-
-        $next = $phpcsFile->findNext(T_WHITESPACE, ($stackPtr + 1), null, true);
-        if ($next === false) {
-            return;
-        }
-
-        if (!in_array($tokens[$next]['code'], [T_CLOSE_TAG, T_CLOSE_CURLY_BRACKET])) {
-            $found = (($tokens[$next]['line'] - $tokens[$stackPtr]['line']) - 1);
-            if ($found !== 1) {
-                $error = 'Expected one blank line after closing brace of class definition; %s found';
-                $data = [$found];
-                // Will be implemented in MAGETWO-49778
-                //$phpcsFile->addWarning($error, $stackPtr, 'SpacingAfterClose', $data);
-            }
-        }
-
-        // Ignore nested style definitions from here on. The spacing before the closing brace
-        // (a single blank line) will be enforced by the above check, which ensures there is a
-        // blank line after the last nested class.
-        $found = $phpcsFile->findPrevious(
-            T_CLOSE_CURLY_BRACKET,
-            ($stackPtr - 1),
-            $tokens[$stackPtr]['bracket_opener']
-        );
-
-        if ($found !== false) {
-            return;
-        }
-
-        $prev = $phpcsFile->findPrevious(Tokens::$emptyTokens, ($stackPtr - 1), null, true);
-        if ($prev !== false && $tokens[$prev]['line'] !== ($tokens[$stackPtr]['line'] - 1)) {
-            $num = ($tokens[$stackPtr]['line'] - $tokens[$prev]['line'] - 1);
-            $error = 'Expected 0 blank lines before closing brace of class definition; %s found';
-            $data = [$num];
-            $phpcsFile->addWarning($error, $stackPtr, 'SpacingBeforeClose', $data);
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/ClassNamingSniff.php b/Magento/Sniffs/Less/ClassNamingSniff.php
deleted file mode 100644
index 64995712..00000000
--- a/Magento/Sniffs/Less/ClassNamingSniff.php
+++ /dev/null
@@ -1,65 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class ClassNamingSniff
- *
- * Ensure that class name responds to the following requirements:
- *
- * - names should be lowercase;
- * - start with a letter (except helper classes);
- * - words should be separated with dash '-';
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#standard-classes
- */
-class ClassNamingSniff implements Sniff
-{
-
-    const STRING_HELPER_CLASSES_PREFIX = '_';
-
-    const STRING_ALLOWED_UNDERSCORES = '__';
-
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_STRING_CONCAT];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-
-        if (T_WHITESPACE !== $tokens[$stackPtr - 1]['code']
-            && !in_array($tokens[$stackPtr - 1]['content'], [
-                TokenizerSymbolsInterface::INDENT_SPACES,
-                TokenizerSymbolsInterface::NEW_LINE,
-            ])
-        ) {
-            return;
-        }
-
-        $className = $tokens[$stackPtr + 1]['content'];
-        if (preg_match_all('/[^a-z0-9\-_]/U', $className, $matches)) {
-            $phpcsFile->addWarning('Class name contains not allowed symbols', $stackPtr, 'NotAllowedSymbol', $matches);
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/ColonSpacingSniff.php b/Magento/Sniffs/Less/ColonSpacingSniff.php
deleted file mode 100644
index 82c8b5ad..00000000
--- a/Magento/Sniffs/Less/ColonSpacingSniff.php
+++ /dev/null
@@ -1,113 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-use PHP_CodeSniffer\Util\Tokens;
-
-/**
- * Class ColonSpacingSniff
- *
- * Ensure that single quotes are used
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#properties-colon-indents
- */
-class ColonSpacingSniff implements Sniff
-{
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_COLON];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-
-        if ($this->needValidateSpaces($phpcsFile, $stackPtr, $tokens)) {
-            $this->validateSpaces($phpcsFile, $stackPtr, $tokens);
-        }
-    }
-
-    /**
-     * Check is it need to check spaces
-     *
-     * @param File $phpcsFile
-     * @param int $stackPtr
-     * @param array $tokens
-     *
-     * @return bool
-     */
-    private function needValidateSpaces(File $phpcsFile, $stackPtr, $tokens)
-    {
-        $nextSemicolon = $phpcsFile->findNext(T_SEMICOLON, $stackPtr);
-
-        if (false === $nextSemicolon
-            || ($tokens[$nextSemicolon]['line'] !== $tokens[$stackPtr]['line'])
-            || TokenizerSymbolsInterface::BITWISE_AND === $tokens[$stackPtr - 1]['content']
-        ) {
-            return false;
-        }
-
-        $prev = $phpcsFile->findPrevious(Tokens::$emptyTokens, ($stackPtr - 1), null, true);
-        if ($tokens[$prev]['code'] !== T_STYLE) {
-            // The colon is not part of a style definition.
-            return false;
-        }
-
-        if ($tokens[$prev]['content'] === 'progid') {
-            // Special case for IE filters.
-            return false;
-        }
-
-        return true;
-    }
-
-    /**
-     * Validate Colon Spacing according to requirements
-     *
-     * @param File $phpcsFile
-     * @param int $stackPtr
-     * @param array $tokens
-     *
-     * @return void
-     */
-    private function validateSpaces(File $phpcsFile, $stackPtr, array $tokens)
-    {
-        if (T_WHITESPACE === $tokens[($stackPtr - 1)]['code']) {
-            $phpcsFile->addWarning('There must be no space before a colon in a style definition', $stackPtr, 'Before');
-        }
-
-        if (T_WHITESPACE !== $tokens[($stackPtr + 1)]['code']) {
-            $phpcsFile->addWarning('Expected 1 space after colon in style definition; 0 found', $stackPtr, 'NoneAfter');
-        } else {
-            $content = $tokens[($stackPtr + 1)]['content'];
-            if (false === strpos($content, $phpcsFile->eolChar)) {
-                $length  = strlen($content);
-                if ($length !== 1) {
-                    $error = 'Expected 1 space after colon in style definition; %s found';
-                    $phpcsFile->addWarning($error, $stackPtr, 'After');
-                }
-            } else {
-                $error = 'Expected 1 space after colon in style definition; newline found';
-                $phpcsFile->addWarning($error, $stackPtr, 'AfterNewline');
-            }
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/ColourDefinitionSniff.php b/Magento/Sniffs/Less/ColourDefinitionSniff.php
deleted file mode 100644
index 80e4642a..00000000
--- a/Magento/Sniffs/Less/ColourDefinitionSniff.php
+++ /dev/null
@@ -1,65 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class ColourDefinitionSniff
- *
- * Ensure that hexadecimal values are used for variables not for properties
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#hexadecimal-notation
- */
-class ColourDefinitionSniff implements Sniff
-{
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_COLOUR];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-        $colour = $tokens[$stackPtr]['content'];
-
-        $variablePtr = $phpcsFile->findPrevious(T_ASPERAND, $stackPtr);
-        if ((false === $variablePtr) || ($tokens[$stackPtr]['line'] !== $tokens[$variablePtr]['line'])) {
-            $phpcsFile->addWarning('Hexadecimal value should be used for variable', $stackPtr, 'NotInVariable');
-        }
-
-        $expected = strtolower($colour);
-        if ($colour !== $expected) {
-            $error = 'CSS colours must be defined in lowercase; expected %s but found %s';
-            $phpcsFile->addWarning($error, $stackPtr, 'NotLower', [$expected, $colour]);
-        }
-
-        // Now check if shorthand can be used.
-        if (strlen($colour) !== 7) {
-            return;
-        }
-
-        if ($colour[1] === $colour[2] && $colour[3] === $colour[4] && $colour[5] === $colour[6]) {
-            $expected = '#' . $colour[1] . $colour[3] . $colour[5];
-            $error = 'CSS colours must use shorthand if available; expected %s but found %s';
-            $phpcsFile->addWarning($error, $stackPtr, 'Shorthand', [$expected, $colour]);
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/CombinatorIndentationSniff.php b/Magento/Sniffs/Less/CombinatorIndentationSniff.php
deleted file mode 100644
index e7e87122..00000000
--- a/Magento/Sniffs/Less/CombinatorIndentationSniff.php
+++ /dev/null
@@ -1,49 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class CombinatorIndentationSniff
- *
- * Ensure that spaces are used before and after combinators
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#combinator-indents
- */
-class CombinatorIndentationSniff implements Sniff
-{
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_PLUS];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-
-        $prevPtr = $stackPtr - 1;
-        $nextPtr = $stackPtr + 1;
-
-        if (($tokens[$prevPtr]['code'] !== T_WHITESPACE) || ($tokens[$nextPtr]['code'] !== T_WHITESPACE)) {
-            $phpcsFile->addWarning('Spaces should be before and after combinators', $stackPtr, 'NoSpaces');
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/CommentLevelsSniff.php b/Magento/Sniffs/Less/CommentLevelsSniff.php
deleted file mode 100644
index 660acfc7..00000000
--- a/Magento/Sniffs/Less/CommentLevelsSniff.php
+++ /dev/null
@@ -1,198 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class CommentLevelsSniff
- *
- * First and second level comments must be surrounded by empty lines.
- * First, second and third level comments should have two spaces after "//".
- * Inline comments should have one space after "//".
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#comments
- */
-class CommentLevelsSniff implements Sniff
-{
-    const COMMENT_STRING = '//';
-
-    const FIRST_LEVEL_COMMENT = '_____________________________________________';
-
-    const SECOND_LEVEL_COMMENT = '--';
-
-    /**
-     * @var array
-     */
-    protected $levelComments = [
-        self::FIRST_LEVEL_COMMENT   => T_STRING,
-        self::SECOND_LEVEL_COMMENT  => T_DEC,
-    ];
-
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_STRING];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-
-        if ((T_STRING !== $tokens[$stackPtr]['code'])
-            || (self::COMMENT_STRING !== $tokens[$stackPtr]['content'])
-            || (1 === $tokens[$stackPtr]['line'])
-        ) {
-            return;
-        }
-
-        $textInSameLine = $phpcsFile->findPrevious([T_STRING, T_STYLE], $stackPtr - 1);
-
-        // is inline comment
-        if ((false !== $textInSameLine)
-            && ($tokens[$textInSameLine]['line'] === $tokens[$stackPtr]['line'])
-        ) {
-            $this->validateInlineComment($phpcsFile, $stackPtr, $tokens);
-            return;
-        }
-
-        // validation of levels comments
-        if (!in_array($tokens[$stackPtr + 1]['content'], [
-                TokenizerSymbolsInterface::DOUBLE_WHITESPACE,
-                TokenizerSymbolsInterface::NEW_LINE,
-            ])
-        ) {
-            $phpcsFile->addWarning('Level\'s comment does not have 2 spaces after "//"', $stackPtr, 'SpacesMissed');
-        }
-
-        if (!$this->isNthLevelComment($phpcsFile, $stackPtr, $tokens)) {
-            return;
-        }
-
-        if (!$this->checkNthLevelComment($phpcsFile, $stackPtr, $tokens)) {
-            $phpcsFile->addWarning(
-                'First and second level comments must be surrounded by empty lines',
-                $stackPtr,
-                'SpaceMissed'
-            );
-        }
-    }
-
-    /**
-     * Validate that inline comment responds to given requirements
-     *
-     * @param File $phpcsFile
-     * @param int $stackPtr
-     * @param array $tokens
-     * @return bool
-     */
-    private function validateInlineComment(File $phpcsFile, $stackPtr, array $tokens)
-    {
-        if ($tokens[$stackPtr + 1]['content'] !== TokenizerSymbolsInterface::WHITESPACE) {
-            $phpcsFile->addWarning('Inline comment should have 1 space after "//"', $stackPtr, 'SpaceMissedAfter');
-        }
-        if ($tokens[$stackPtr - 1]['content'] !== TokenizerSymbolsInterface::WHITESPACE) {
-            $phpcsFile->addWarning('Inline comment should have 1 space before "//"', $stackPtr, 'SpaceMissedBefore');
-        }
-    }
-
-    /**
-     * Check is it n-th level comment was found
-     *
-     * @param File $phpcsFile
-     * @param int $stackPtr
-     * @param array $tokens
-     * @return bool
-     */
-    private function isNthLevelComment(File $phpcsFile, $stackPtr, array $tokens)
-    {
-        $nthLevelCommentFound = false;
-        $levelComment = 0;
-
-        foreach ($this->levelComments as $code => $comment) {
-            $levelComment = $phpcsFile->findNext($comment, $stackPtr, null, false, $code);
-            if (false !== $levelComment) {
-                $nthLevelCommentFound = true;
-                break;
-            }
-        }
-
-        if (false === $nthLevelCommentFound) {
-            return false;
-        }
-
-        $currentLine = $tokens[$stackPtr]['line'];
-        $levelCommentLine = $tokens[$levelComment]['line'];
-
-        if ($currentLine !== $levelCommentLine) {
-            return false;
-        }
-
-        return true;
-    }
-
-    /**
-     * Check is it n-th level comment is correct
-     *
-     * @param File $phpcsFile
-     * @param int $stackPtr
-     * @param array $tokens
-     * @return bool
-     */
-    private function checkNthLevelComment(File $phpcsFile, $stackPtr, array $tokens)
-    {
-        $correct = false;
-
-        $nextLine = $phpcsFile->findNext(
-            T_WHITESPACE,
-            $stackPtr,
-            null,
-            false,
-            TokenizerSymbolsInterface::NEW_LINE
-        );
-
-        if (false === $nextLine) {
-            return $correct;
-        }
-
-        if (($tokens[$nextLine]['content'] !== TokenizerSymbolsInterface::NEW_LINE)
-            || ($tokens[$nextLine + 1]['content'] !== TokenizerSymbolsInterface::NEW_LINE)
-        ) {
-            return $correct;
-        }
-
-        $commentLinePtr = $stackPtr;
-        while ($tokens[$commentLinePtr - 2]['line'] > 1) {
-            $commentLinePtr = $phpcsFile->findPrevious(T_STRING, $commentLinePtr - 1, null, false, '//');
-
-            if (false === $commentLinePtr) {
-                continue;
-            }
-
-            if (($tokens[$commentLinePtr - 1]['content'] === TokenizerSymbolsInterface::NEW_LINE)
-                && ($tokens[$commentLinePtr - 2]['content'] === TokenizerSymbolsInterface::NEW_LINE)
-            ) {
-                $correct = true;
-                break;
-            }
-        }
-
-        return $correct;
-    }
-}
diff --git a/Magento/Sniffs/Less/ImportantPropertySniff.php b/Magento/Sniffs/Less/ImportantPropertySniff.php
deleted file mode 100644
index c097bae1..00000000
--- a/Magento/Sniffs/Less/ImportantPropertySniff.php
+++ /dev/null
@@ -1,51 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class ImportantPropertySniff
- *
- * Ensure that single quotes are used
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#important-property
- */
-class ImportantPropertySniff implements Sniff
-{
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_BOOLEAN_NOT];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-
-        // Will be implemented in MAGETWO-49778
-        //$phpcsFile->addWarning('!important is used', $stackPtr, '!ImportantIsUsed');
-
-        if (($tokens[$stackPtr + 1]['content'] === 'important')
-            && ($tokens[$stackPtr - 1]['content'] !== TokenizerSymbolsInterface::WHITESPACE)
-        ) {
-            $phpcsFile->addWarning('Space before !important is missing', $stackPtr, 'NoSpace');
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/IndentationSniff.php b/Magento/Sniffs/Less/IndentationSniff.php
deleted file mode 100644
index aeaaf89a..00000000
--- a/Magento/Sniffs/Less/IndentationSniff.php
+++ /dev/null
@@ -1,106 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class IndentationSniff
- *
- * Ensures styles are indented 4 spaces.
- *
- * @see Squiz_Sniffs_CSS_IndentationSniff
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#indentation
- */
-class IndentationSniff implements Sniff
-{
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * The number of spaces code should be indented.
-     *
-     * @var int
-     */
-    public $indent = 4;
-
-    /**
-     * A nesting level than this value will throw a warning.
-     *
-     * @var int
-     */
-    public $maxIndentLevel = 3;
-
-    /** Skip codes that can be detected by sniffer incorrectly
-     *
-     * @var array
-     */
-    private $styleCodesToSkip = [T_ASPERAND, T_COLON, T_OPEN_PARENTHESIS, T_CLOSE_PARENTHESIS];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_OPEN_TAG];
-    }
-
-    /**
-     * @inheritdoc
-     * @SuppressWarnings(PHPMD.CyclomaticComplexity)
-     * @SuppressWarnings(PHPMD.NPathComplexity)
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-
-        $numTokens = (count($tokens) - 2);
-        $indentLevel = 0;
-        for ($i = 1; $i < $numTokens; $i++) {
-            if ($tokens[$i]['code'] === T_COMMENT) {
-                // Don't check the indent of comments.
-                continue;
-            }
-
-            if ($tokens[$i]['code'] === T_OPEN_CURLY_BRACKET) {
-                $indentLevel++;
-            } elseif ($tokens[($i + 1)]['code'] === T_CLOSE_CURLY_BRACKET) {
-                $indentLevel--;
-            }
-
-            if ($tokens[$i]['column'] !== 1) {
-                continue;
-            }
-
-            // We started a new line, so check indent.
-            if ($tokens[$i]['code'] === T_WHITESPACE) {
-                $content = str_replace($phpcsFile->eolChar, '', $tokens[$i]['content']);
-                $foundIndent = strlen($content);
-            } else {
-                $foundIndent = 0;
-            }
-
-            $expectedIndent = ($indentLevel * $this->indent);
-            if (!($expectedIndent > 0 && strpos($tokens[$i]['content'], $phpcsFile->eolChar) !== false)
-                && ($foundIndent !== $expectedIndent)
-                && (!in_array($tokens[$i + 1]['code'], $this->styleCodesToSkip))
-            ) {
-                $error = 'Line indented incorrectly; expected %s spaces, found %s';
-                $phpcsFile->addWarning($error, $i, 'Incorrect', [$expectedIndent, $foundIndent]);
-            }
-
-            if ($indentLevel > $this->maxIndentLevel) {
-                // Will be implemented in MAGETWO-49778
-                // $phpcsFile->addWarning('Avoid using more than three levels of nesting', $i, 'IncorrectNestingLevel');
-            }
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/PropertiesLineBreakSniff.php b/Magento/Sniffs/Less/PropertiesLineBreakSniff.php
deleted file mode 100644
index 23c130b5..00000000
--- a/Magento/Sniffs/Less/PropertiesLineBreakSniff.php
+++ /dev/null
@@ -1,52 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class PropertiesLineBreakSniff
- *
- * Start each property declaration in a new line
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#properties-line-break
- */
-class PropertiesLineBreakSniff implements Sniff
-{
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_SEMICOLON];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-
-        $prevPtr = $phpcsFile->findPrevious(T_SEMICOLON, ($stackPtr - 1));
-        if (false === $prevPtr) {
-            return;
-        }
-
-        if ($tokens[$prevPtr]['line'] === $tokens[$stackPtr]['line']) {
-            $error = 'Each property must be on a line by itself';
-            $phpcsFile->addWarning($error, $stackPtr, 'SameLine');
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/PropertiesSortingSniff.php b/Magento/Sniffs/Less/PropertiesSortingSniff.php
deleted file mode 100644
index 4ad04444..00000000
--- a/Magento/Sniffs/Less/PropertiesSortingSniff.php
+++ /dev/null
@@ -1,119 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class PropertiesSortingSniff
- *
- * Ensure that properties are sorted alphabetically
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#sorting
- */
-class PropertiesSortingSniff implements Sniff
-{
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * List of properties that belong to class
-     *
-     * @var array
-     */
-    private $properties = [];
-
-    /**
-     * Skip symbols that can be detected by sniffer incorrectly
-     *
-     * @var array
-     */
-    private $styleSymbolsToSkip = [
-        TokenizerSymbolsInterface::BITWISE_AND,
-        TokenizerSymbolsInterface::COLON,
-    ];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [
-            T_OPEN_CURLY_BRACKET,
-            T_CLOSE_CURLY_BRACKET,
-            T_OPEN_PARENTHESIS,
-            T_CLOSE_PARENTHESIS,
-            T_STYLE
-        ];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-        $currentToken = $tokens[$stackPtr];
-
-        // if variables, mixins, extends area used - skip
-        if ((T_ASPERAND === $tokens[$stackPtr - 1]['code'])
-            || in_array($tokens[$stackPtr]['content'], $this->styleSymbolsToSkip)
-        ) {
-            return;
-        }
-
-        $nextCurlyBracket = $phpcsFile->findNext(T_OPEN_CURLY_BRACKET, $stackPtr + 1);
-        if (in_array($currentToken['code'], [T_OPEN_CURLY_BRACKET, T_CLOSE_CURLY_BRACKET])
-            || ((false !== $nextCurlyBracket) && ($tokens[$nextCurlyBracket]['line'] === $tokens[$stackPtr]['line']))
-        ) {
-            if ($this->properties) {
-                // validate collected properties before erase them
-                $this->validatePropertiesSorting($phpcsFile, $stackPtr, $this->properties);
-            }
-
-            $this->properties = [];
-            return;
-        }
-
-        if (T_STYLE === $currentToken['code']) {
-            $this->properties[] = $currentToken['content'];
-        }
-    }
-
-    /**
-     * Validate sorting of properties of class
-     *
-     * @param File $phpcsFile
-     * @param int $stackPtr
-     * @param array $properties
-     *
-     * @return void
-     */
-    private function validatePropertiesSorting(File $phpcsFile, $stackPtr, array $properties)
-    {
-        // Fix needed for cases when incorrect properties passed for validation due to bug in PHP tokens.
-        $symbolsForSkip = ['(', 'block', 'field'];
-        $properties = array_filter(
-            $properties,
-            function ($var) use ($symbolsForSkip) {
-                return !in_array($var, $symbolsForSkip);
-            }
-        );
-
-        $originalProperties = $properties;
-        sort($properties);
-
-        if ($originalProperties !== $properties) {
-            $delimiter = $phpcsFile->findPrevious(T_SEMICOLON, $stackPtr);
-            $phpcsFile->addWarning('Properties sorted not alphabetically', $delimiter, 'PropertySorting');
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/QuotesSniff.php b/Magento/Sniffs/Less/QuotesSniff.php
deleted file mode 100644
index fb5bb1d8..00000000
--- a/Magento/Sniffs/Less/QuotesSniff.php
+++ /dev/null
@@ -1,46 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class QuotesSniff
- *
- * Ensure that single quotes are used
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#quotes
- */
-class QuotesSniff implements Sniff
-{
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_CONSTANT_ENCAPSED_STRING];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-
-        if (false !== strpos($tokens[$stackPtr]['content'], '"')) {
-            $phpcsFile->addWarning('Use single quotes', $stackPtr, 'DoubleQuotes');
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/SelectorDelimiterSniff.php b/Magento/Sniffs/Less/SelectorDelimiterSniff.php
deleted file mode 100644
index 838f00d6..00000000
--- a/Magento/Sniffs/Less/SelectorDelimiterSniff.php
+++ /dev/null
@@ -1,90 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class SelectorDelimiterSniff
- *
- * Ensure that a line break exists after each selector delimiter.
- * No spaces should be before or after delimiters.
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#selector-delimiters
- */
-class SelectorDelimiterSniff implements Sniff
-{
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_COMMA];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-
-        // Check that there's no spaces before delimiter
-        if ($tokens[$stackPtr - 1]['code'] === T_WHITESPACE) {
-            $phpcsFile->addWarning('Spaces should not be before delimiter', $stackPtr - 1, 'SpacesBeforeDelimiter');
-        }
-
-        $this->validateParenthesis($phpcsFile, $stackPtr, $tokens);
-    }
-
-    /**
-     * Parenthesis validation.
-     *
-     * @param File $phpcsFile
-     * @param int $stackPtr
-     * @param array $tokens
-     * @return void
-     */
-    private function validateParenthesis(File $phpcsFile, $stackPtr, array $tokens)
-    {
-        $nextPtr = $stackPtr + 1;
-
-        $nextClassPtr = $phpcsFile->findNext(T_STRING_CONCAT, $nextPtr);
-        $nextOpenBrace = $phpcsFile->findNext(T_OPEN_CURLY_BRACKET, $nextPtr);
-
-        if ($nextClassPtr === false || $nextOpenBrace === false) {
-            return;
-        }
-
-        $stackLine = $tokens[$stackPtr]['line'];
-        $nextClassLine = $tokens[$nextPtr]['line'];
-        $nextOpenBraceLine = $tokens[$nextOpenBrace]['line'];
-
-        // Check that each class declaration goes from new line
-        if (($stackLine === $nextClassLine) && ($stackLine === $nextOpenBraceLine)) {
-            $prevParenthesis = $phpcsFile->findPrevious(T_OPEN_PARENTHESIS, $stackPtr);
-            $nextParenthesis = $phpcsFile->findNext(T_OPEN_PARENTHESIS, $stackPtr);
-
-            if ((false !== $prevParenthesis) && (false !== $nextParenthesis)
-                && ($tokens[$prevParenthesis]['line'] === $tokens[$stackPtr]['line'])
-                && ($tokens[$nextParenthesis]['line'] === $tokens[$stackPtr]['line'])
-            ) {
-                return;
-            }
-
-            $error = 'Add a line break after each selector delimiter';
-            $phpcsFile->addWarning($error, $nextOpenBrace, 'LineBreakAfterDelimiter');
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/SemicolonSpacingSniff.php b/Magento/Sniffs/Less/SemicolonSpacingSniff.php
deleted file mode 100644
index 12bb3e7c..00000000
--- a/Magento/Sniffs/Less/SemicolonSpacingSniff.php
+++ /dev/null
@@ -1,115 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class SemicolonSpacingSniff
- *
- * Property should have a semicolon at the end of line
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#end-of-the-property-line
- */
-class SemicolonSpacingSniff implements Sniff
-{
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * Skip symbols that can be detected by sniffer incorrectly
-     *
-     * @var array
-     */
-    private $styleSymbolsToSkip = [
-        TokenizerSymbolsInterface::BITWISE_AND,
-        TokenizerSymbolsInterface::COLON,
-        TokenizerSymbolsInterface::OPEN_PARENTHESIS,
-        TokenizerSymbolsInterface::CLOSE_PARENTHESIS,
-    ];
-
-    /** Skip codes that can be detected by sniffer incorrectly
-     *
-     * @var array
-     */
-    private $styleCodesToSkip = [T_ASPERAND, T_COLON, T_OPEN_PARENTHESIS, T_CLOSE_PARENTHESIS];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_STYLE];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-
-        if (in_array($tokens[$stackPtr]['content'], $this->styleSymbolsToSkip)) {
-            return;
-        }
-
-        $semicolonPtr = $phpcsFile->findNext(T_SEMICOLON, ($stackPtr + 1));
-        if ($tokens[$semicolonPtr]['line'] !== $tokens[$stackPtr]['line']) {
-            $semicolonPtr = $phpcsFile->findNext(T_STYLE, ($stackPtr + 1), null, false, ";");
-        }
-
-        $this->validateSemicolon($phpcsFile, $stackPtr, $tokens, $semicolonPtr);
-        $this->validateSpaces($phpcsFile, $stackPtr, $tokens, $semicolonPtr);
-    }
-
-    /**
-     * Semicolon validation.
-     *
-     * @param File $phpcsFile
-     * @param int $stackPtr
-     * @param array $tokens
-     * @param int $semicolonPtr
-     * @return void
-     */
-    private function validateSemicolon(File $phpcsFile, $stackPtr, array $tokens, $semicolonPtr)
-    {
-        if ((false === $semicolonPtr || $tokens[$semicolonPtr]['line'] !== $tokens[$stackPtr]['line'])
-            && (isset($tokens[$stackPtr - 1]) && !in_array($tokens[$stackPtr - 1]['code'], $this->styleCodesToSkip))
-            && (T_COLON !== $tokens[$stackPtr + 1]['code'])
-        ) {
-            $error = 'Style definitions must end with a semicolon';
-            $phpcsFile->addWarning($error, $stackPtr, 'NotAtEnd');
-        }
-    }
-
-    /**
-     * Spaces validation.
-     *
-     * @param File $phpcsFile
-     * @param int $stackPtr
-     * @param array $tokens
-     * @param int $semicolonPtr
-     * @return void
-     */
-    private function validateSpaces(File $phpcsFile, $stackPtr, array $tokens, $semicolonPtr)
-    {
-        if (!isset($tokens[($semicolonPtr - 1)])) {
-            return;
-        }
-
-        if ($tokens[($semicolonPtr - 1)]['code'] === T_WHITESPACE) {
-            $length  = strlen($tokens[($semicolonPtr - 1)]['content']);
-            $error = 'Expected 0 spaces before semicolon in style definition; %s found';
-            $data  = [$length];
-            $phpcsFile->addWarning($error, $stackPtr, 'SpaceFound', $data);
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/TokenizerSymbolsInterface.php b/Magento/Sniffs/Less/TokenizerSymbolsInterface.php
deleted file mode 100644
index db6a2fe1..00000000
--- a/Magento/Sniffs/Less/TokenizerSymbolsInterface.php
+++ /dev/null
@@ -1,27 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-/**
- * Interface TokenizerSymbolsInterface
- */
-interface TokenizerSymbolsInterface
-{
-    const TOKENIZER_CSS = 'CSS';
-
-    /**#@+
-     * Symbols for usage into Sniffers
-     */
-    const BITWISE_AND         = '&';
-    const COLON               = ';';
-    const OPEN_PARENTHESIS    = '(';
-    const CLOSE_PARENTHESIS   = ')';
-    const NEW_LINE            = "\n";
-    const WHITESPACE          = ' ';
-    const DOUBLE_WHITESPACE   = '  ';
-    const INDENT_SPACES       = '    ';
-    /**#@-*/
-}
diff --git a/Magento/Sniffs/Less/TypeSelectorConcatenationSniff.php b/Magento/Sniffs/Less/TypeSelectorConcatenationSniff.php
deleted file mode 100644
index 837371b5..00000000
--- a/Magento/Sniffs/Less/TypeSelectorConcatenationSniff.php
+++ /dev/null
@@ -1,56 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class TypeSelectorConcatenation
- *
- * Ensure that selector in one line, concatenation is not used
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#formatting-1
- */
-class TypeSelectorConcatenationSniff implements Sniff
-{
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * @var array
-     */
-    private $symbolsBeforeConcat = [
-        TokenizerSymbolsInterface::INDENT_SPACES,
-        TokenizerSymbolsInterface::NEW_LINE,
-    ];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_BITWISE_AND];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-
-        if (0 === strpos($tokens[$stackPtr + 1]['content'], '-')
-            && in_array($tokens[$stackPtr - 1]['content'], $this->symbolsBeforeConcat)
-        ) {
-            $phpcsFile->addWarning('Concatenation is used', $stackPtr, 'ConcatenationUsage');
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/TypeSelectorsSniff.php b/Magento/Sniffs/Less/TypeSelectorsSniff.php
deleted file mode 100644
index 5d2823f8..00000000
--- a/Magento/Sniffs/Less/TypeSelectorsSniff.php
+++ /dev/null
@@ -1,97 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class TypeSelectorsSniff
- *
- * Ensure that Type selectors respond to the following requirements:
- *
- * - avoid qualifying class names with type selectors;
- * - Unless necessary (for example with helper classes), do not use element names in conjunction with IDs or classes.
- * - Type selectors must be lowercase
- * - Write selector in one line, do not use concatenation
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#selectors-naming
- */
-class TypeSelectorsSniff implements Sniff
-{
-    /**
-     * Tags that are not allowed as type selector
-     *
-     * @var array
-     */
-    private $tags = [
-        'a', 'abbr', 'acronym', 'address', 'area', 'b', 'base', 'bdo',
-        'big', 'blockquote', 'body', 'br', 'button', 'caption', 'cite',
-        'code', 'col', 'colgroup', 'dd', 'del', 'div', 'dfn', 'dl',
-        'dt', 'em', 'fieldset', 'form', 'frame', 'frameset', 'h1', 'h2',
-        'h3', 'h4', 'h5', 'h6', 'head', 'hr', 'html', 'i', 'iframe',
-        'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'link',
-        'map', 'meta', 'noframes', 'noscript', 'object', 'ol', 'optgroup',
-        'option', 'p', 'param', 'pre', 'q', 'samp', 'script', 'select',
-        'small', 'span', 'strong', 'style', 'sub', 'sup', 'table',
-        'tbody', 'td', 'textarea', 'tfoot', 'th', 'thead', 'title',
-        'tr', 'tt', 'ul', 'var',
-            // HTML5
-        'article', 'aside', 'audio', 'bdi', 'canvas', 'command',
-        'datalist', 'details', 'dialog', 'embed', 'figure', 'figcaption',
-        'footer', 'header', 'hgroup', 'keygen', 'mark', 'meter', 'nav',
-        'output', 'progress', 'ruby', 'rt', 'rp', 'track', 'section',
-        'source', 'summary', 'time', 'video', 'wbr'
-    ];
-
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_STRING_CONCAT];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-
-        $bracketPtr = $phpcsFile->findNext(T_OPEN_CURLY_BRACKET, $stackPtr);
-
-        if (false === $bracketPtr) {
-            return;
-        }
-
-        $isBracketOnSameLane = (bool)($tokens[$bracketPtr]['line'] === $tokens[$stackPtr]['line']);
-
-        if (!$isBracketOnSameLane) {
-            return;
-        }
-
-        if ((T_STRING === $tokens[$stackPtr - 1]['code'])
-            && in_array($tokens[$stackPtr - 1]['content'], $this->tags)
-        ) {
-            // Will be implemented in MAGETWO-49778
-            //$phpcsFile->addWarning('Type selector is used', $stackPtr, 'TypeSelector');
-        }
-
-        for ($i = $stackPtr; $i < $bracketPtr; $i++) {
-            if (preg_match('/[A-Z]/', $tokens[$i]['content'])) {
-                $phpcsFile->addWarning('Selector contains uppercase symbols', $stackPtr, 'UpperCaseSelector');
-            }
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/VariablesSniff.php b/Magento/Sniffs/Less/VariablesSniff.php
deleted file mode 100644
index 3663254f..00000000
--- a/Magento/Sniffs/Less/VariablesSniff.php
+++ /dev/null
@@ -1,80 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class VariablesSniff
- *
- * Ensure that the variables are responds to the following requirements:
- * - If variables are local and used only in a module scope,
- *   they should be located in the module file, in the beginning of the general comment.
- * - All variable names must be lowercase
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#local-variables
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#naming
- */
-class VariablesSniff implements Sniff
-{
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_ASPERAND];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-        $currentToken = $tokens[$stackPtr];
-
-        $nextColon = $phpcsFile->findNext(T_COLON, $stackPtr);
-        $nextSemicolon = $phpcsFile->findNext(T_SEMICOLON, $stackPtr);
-        if ((false === $nextColon) || (false === $nextSemicolon)) {
-            return;
-        }
-
-        $isVariableDeclaration = ($currentToken['line'] === $tokens[$nextColon]['line'])
-            && ($currentToken['line'] === $tokens[$nextSemicolon]['line'])
-            && (T_STRING === $tokens[$stackPtr + 1]['code'])
-            && (T_COLON === $tokens[$stackPtr + 2]['code']);
-
-        if (!$isVariableDeclaration) {
-            return;
-        }
-
-        $classBefore = $phpcsFile->findPrevious(T_STYLE, $stackPtr);
-        if (false !== $classBefore) {
-            $phpcsFile->addWarning(
-                'Variable declaration located not in the beginning of general comments',
-                $stackPtr,
-                'VariableLocation'
-            );
-        }
-
-        $variableName = $tokens[$stackPtr + 1]['content'];
-        if (preg_match('/[A-Z]/', $variableName)) {
-            $phpcsFile->addWarning(
-                'Variable declaration contains uppercase symbols',
-                $stackPtr,
-                'VariableUppercase'
-            );
-        }
-    }
-}
diff --git a/Magento/Sniffs/Less/ZeroUnitsSniff.php b/Magento/Sniffs/Less/ZeroUnitsSniff.php
deleted file mode 100644
index 6ab2fc6c..00000000
--- a/Magento/Sniffs/Less/ZeroUnitsSniff.php
+++ /dev/null
@@ -1,78 +0,0 @@
-<?php
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
-namespace Magento\Sniffs\Less;
-
-use PHP_CodeSniffer\Sniffs\Sniff;
-use PHP_CodeSniffer\Files\File;
-
-/**
- * Class ZeroUnitsSniff
- *
- * Ensure that units for 0 is not specified
- * Omit leading "0"s in values, use dot instead
- *
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#and-units
- * @link https://devdocs.magento.com/guides/v2.0/coding-standards/code-standard-less.html#floating-values
- */
-class ZeroUnitsSniff implements Sniff
-{
-    const CSS_PROPERTY_UNIT_PX = 'px';
-    const CSS_PROPERTY_UNIT_EM = 'em';
-    const CSS_PROPERTY_UNIT_REM = 'rem';
-
-    /**
-     * List of available CSS Property units
-     *
-     * @var array
-     */
-    private $units = [
-        self::CSS_PROPERTY_UNIT_PX,
-        self::CSS_PROPERTY_UNIT_EM,
-        self::CSS_PROPERTY_UNIT_REM,
-    ];
-
-    /**
-     * A list of tokenizers this sniff supports.
-     *
-     * @var array
-     */
-    public $supportedTokenizers = [TokenizerSymbolsInterface::TOKENIZER_CSS];
-
-    /**
-     * @inheritdoc
-     */
-    public function register()
-    {
-        return [T_LNUMBER, T_DNUMBER];
-    }
-
-    /**
-     * @inheritdoc
-     */
-    public function process(File $phpcsFile, $stackPtr)
-    {
-        $tokens = $phpcsFile->getTokens();
-        $tokenCode = $tokens[$stackPtr]['code'];
-        $tokenContent = $tokens[$stackPtr]['content'];
-
-        $nextToken = $tokens[$stackPtr + 1];
-
-        if (T_LNUMBER === $tokenCode
-            && "0" === $tokenContent
-            && T_STRING === $nextToken['code']
-            && in_array($nextToken['content'], $this->units)
-        ) {
-            $phpcsFile->addWarning('Units specified for "0" value', $stackPtr, 'ZeroUnitFound');
-        }
-
-        if ((T_DNUMBER === $tokenCode)
-            && 0 === strpos($tokenContent, "0")
-            && ((float)$tokenContent < 1)
-        ) {
-            $phpcsFile->addWarning('Values starts from "0"', $stackPtr, 'ZeroUnitFound');
-        }
-    }
-}
diff --git a/Magento/ruleset.xml b/Magento/ruleset.xml
index b009a662..3e80c1cb 100644
--- a/Magento/ruleset.xml
+++ b/Magento/ruleset.xml
@@ -89,9 +89,6 @@
     <rule ref="Magento.Legacy.MageEntity">
         <severity>10</severity>
     </rule>
-    <rule ref="Magento.Less">
-        <severity>6</severity>
-    </rule>
     <rule ref="Magento.NamingConvention.InterfaceName">
         <severity>6</severity>
     </rule>