tech: removed js related stuff now that 99% is typescript (#12905)

package.json

@@ -45,9 +45,7 @@
     "grunt-contrib-concat": "^1.0.1",
     "grunt-contrib-copy": "~1.0.0",
     "grunt-contrib-cssmin": "~1.0.2",
-    "grunt-contrib-jshint": "~1.1.0",
     "grunt-exec": "^1.0.1",
-    "grunt-jscs": "3.0.1",
     "grunt-karma": "~2.0.0",
     "grunt-notify": "^0.4.5",
     "grunt-postcss": "^0.8.0",
@@ -60,7 +58,6 @@
     "html-webpack-plugin": "^3.2.0",
     "husky": "^0.14.3",
     "jest": "^22.0.4",
-    "jshint-stylish": "~2.2.1",
     "karma": "1.7.0",
     "karma-chrome-launcher": "~2.2.0",
     "karma-expect": "~1.1.3",