Removed no longer used dependencies.

package.json

@@ -42,8 +42,6 @@
   },
   "homepage": "http://threejs.org/",
   "devDependencies": {
-    "argparse": "^1.0.3",
-    "jscs": "^1.13.1",
     "rollup": "^0.36.3",
     "rollup-watch": "^2.5.0",
     "uglify-js": "^2.6.0"