[fixed] Remove duplicate dependency

Author: CMTegner

package.json

@@ -46,7 +46,6 @@
   ],
   "keywords": [],
   "dependencies": {
-    "babel-preset-es2015": "^6.5.0",
     "dom-scroll-into-view": "1.0.1",
     "lodash": "^4.5.0",
     "react": "^0.14.7",