FIREFLY-74:removing extra devDependencies, required by reviewer Loi.

Author: Dean Naji

package.json

@@ -56,10 +56,6 @@
     "validator": "^9.4"
   },
   "devDependencies": {
-    "@babel/core": "^7.5.0",
-    "@babel/polyfill": "^7.0.0",
-    "@babel/register": "^7.4.4",
-    "babel-core": "7.0.0-bridge.0",
     "babel-jest": "^23.4.2",
     "chai": "^3.5.0",
     "css-loader": "^0.19.0",