Remove unused packages

package.json

@@ -49,17 +49,15 @@
     "eslint-plugin-import": "^1.8.1",
     "eslint-plugin-jsx-a11y": "^1.2.0",
     "eslint-plugin-react": "^5.1.1",
-    "express": "^4.13.4",
     "extract-text-webpack-plugin": "^1.0.1",
     "gulp": "^3.9.1",
     "gulp-decompress": "^2.0.0",
     "gulp-remote-src": "^0.4.1",
+    "gulp-util": "^3.0.7",
     "json-loader": "^0.5.4",
     "npm-i": "0.0.2",
-    "postcss": "^5.0.21",
     "postcss-import": "^8.1.2",
     "postcss-loader": "^0.9.1",
-    "postcss-nested": "^1.0.0",
     "postcss-scss": "^0.1.7",
     "precss": "^1.4.0",
     "react-transform-catch-errors": "^1.0.2",
@@ -83,13 +81,9 @@
   "dependencies": {
     "application-config": "^0.2.2",
     "deep-diff": "^0.3.4",
-    "devtron": "^1.1.1",
-    "electron-debug": "^1.0.0",
     "electron-window-state": "^3.0.3",
     "gmusic.js": "^4.2.0",
-    "invariant": "^2.2.1",
     "lodash.throttle": "^4.0.1",
-    "nan": "^2.3.3",
     "node-notifier": "^4.5.0",
     "node-uuid": "^1.4.7",
     "osx-mouse": "^1.2.1",
@@ -103,8 +97,6 @@
     "redux-electron-store": "^0.3.9",
     "redux-logger": "^2.6.1",
     "redux-promise": "^0.5.3",
-    "redux-storage": "^4.0.0",
-    "redux-storage-engine-localstorage": "^1.1.0",
     "redux-thunk": "^2.1.0"
   }
 }