remove babel plugin for default exports

Author: pithu

.babelrc

@@ -7,9 +7,6 @@
       }
     ]
   ],
-  "plugins": [
-    "add-module-exports"
-  ],
   "comments": false,
   "env": {
     "test": {

package.json

@@ -47,7 +47,6 @@
     "babel-cli": "^6.26.0",
     "babel-core": "^6.26.0",
     "babel-loader": "^7.1.4",
-    "babel-plugin-add-module-exports": "^0.2.1",
     "babel-plugin-istanbul": "^4.1.5",
     "babel-preset-es2015": "^6.24.1",
     "chai": "^4.1.2",