fixed unused deps

package.json

@@ -12,7 +12,8 @@
     "release": "release-flow",
     "postinstall": "./node_modules/protractor/bin/webdriver-manager update",
     "build": "gulp build",
-    "dev": "gulp dev"
+    "dev": "gulp dev",
+    "depcheck": "gulp depcheck"
   },
   "repository": {
     "type": "git",
@@ -33,20 +34,16 @@
     "fastclick": "1.0.6",
     "fg-overthrow": "0.7.1",
     "font-awesome": "4.5.0",
-    "git-assert-clean": "1.0.0",
     "gulp": "3.9.1",
     "gulp-concat": "2.6.0",
     "gulp-connect": "2.2.0",
-    "gulp-conventional-changelog": "1.1.0",
     "gulp-csso": "1.1.0",
     "gulp-depcheck": "1.1.0",
-    "gulp-git": "1.7.1",
     "gulp-jscs": "3.0.2",
     "gulp-jshint": "2.0.0",
     "gulp-less": "3.0.5",
     "gulp-mobilizer": "0.0.3",
     "gulp-protractor": "2.3.0",
-    "gulp-release-tasks": "0.0.3",
     "gulp-rename": "1.2.2",
     "gulp-sequence": "0.4.5",
     "gulp-sourcemaps": "1.6.0",