build: remove gulp-jscs

Author: mgechev

package.json

@@ -10,7 +10,6 @@
     "gulp-eslint": "^3.0.1",
     "gulp": "^3.8.10",
     "gulp-jasmine": "^2.0.1",
-    "gulp-jscs": "^1.4.0",
     "gulp-shell": "^0.2.11",
     "jsdoc": "3.3.0-alpha13"
   },