Remove node-notifier package since it's not really being used

Author: dennmart

package-lock.json

@@ -15,7 +15,6 @@
   "dependencies": {
     "boron": "^0.2.3",
     "jquery": "^3.1.0",
-    "node-notifier": "^4.6.1",
     "pluralize": "^7.0.0",
     "react": "^15.3.1",
     "react-dom": "^15.3.1",