Remove unneeded package.

package.json

@@ -40,11 +40,13 @@
     "babel-loader": "^8.0.5",
     "babel-preset-minify": "^0.5.0",
     "better-docs": "^1.0.0",
+    "broadcast-channel": "^2.1.12",
     "css-element-queries": "^1.2.0",
     "dialog-polyfill": "^0.4.10",
     "file-loader": "^1.1.11",
     "html-loader": "^0.5.5",
     "jquery": "^3.4.1",
+    "js-yaml": ">=3.13.1",
     "lodash": "^4.17.11",
     "polyfill-array-includes": "^2.0.0",
     "query-string": "^5.1.1",
@@ -54,8 +56,7 @@
     "webpack": "^4.6.0",
     "webpack-cli": "^2.1.2",
     "webpack-jquery-ui": "^1.0.0",
-    "zincjs": "^0.29.13",
-    "js-yaml": ">=3.13.1"
+    "zincjs": "^0.29.13"
   },
   "dependencies": {}
 }