Remove useless wrapping para tag in new file

Follow-up to GH-3972

Author: Girgias

reference/pgsql/functions/pg-result-memory-size.xml

@@ -21,16 +21,14 @@
 
  <refsect1 role="parameters">
   &reftitle.parameters;
-  <para>
-   <variablelist>
-    <varlistentry>
-     <term><parameter>result</parameter></term>
-     <listitem>
-      &pgsql.parameter.result;
-     </listitem>
-    </varlistentry>
-   </variablelist>
-  </para>
+  <variablelist>
+   <varlistentry>
+    <term><parameter>result</parameter></term>
+    <listitem>
+     &pgsql.parameter.result;
+    </listitem>
+   </varlistentry>
+  </variablelist>
  </refsect1>
 
  <refsect1 role="returnvalues">
@@ -68,11 +66,9 @@ int(3288)
 
  <refsect1 role="seealso">
   &reftitle.seealso;
-  <para>
-   <simplelist>
-    <member><function>pg_free_result</function></member>
-   </simplelist>
-  </para>
+  <simplelist>
+   <member><function>pg_free_result</function></member>
+  </simplelist>
  </refsect1>
 </refentry>