Remove external helpers, no savings there

Author: STRML

.babelrc

@@ -6,7 +6,6 @@
   ],
   "plugins": [
     "transform-flow-comments",
-    "external-helpers",
   ],
   "env": {
     "test": {

package.json

@@ -33,7 +33,6 @@
     "babel-eslint": "^6.1.2",
     "babel-loader": "^6.2.4",
     "babel-plugin-espower": "^2.3.1",
-    "babel-plugin-external-helpers": "^6.8.0",
     "babel-plugin-transform-flow-comments": "^6.8.0",
     "babel-preset-es2015": "^6.9.0",
     "babel-preset-react": "^6.11.1",