Remove unused webpack and http-server dependencies

package.json

@@ -30,7 +30,6 @@
     "chai": "^3.5.0",
     "eslint": "^4.19.1",
     "eslint-config-google": "^0.9.1",
-    "http-server": "^0.11.1",
     "js-yaml": "^3.13.1",
     "jsdom": "11.3.0",
     "jsdom-global": "3.0.2",
@@ -48,8 +47,7 @@
     "rollup-plugin-uglify": "^1.0.1",
     "rollup-watch": "^4.3.1",
     "should": "^13.2.3",
-    "source-map-support": "^0.5.19",
-    "webpack": "^2.2.1"
+    "source-map-support": "^0.5.19"
   },
   "dependencies": {
     "@webcomponents/webcomponentsjs": "^1.3.3",