Удалил неиспользуемые пакеты

package.json

@@ -32,7 +32,6 @@
     "clean-webpack-plugin": "^1.0.1",
     "copy-webpack-plugin": "^5.1.1",
     "css-loader": "^1.0.0",
-    "disable-output-webpack-plugin": "^1.0.1",
     "element-theme-chalk": "^2.12.0",
     "eslint": "^5.16.0",
     "eslint-plugin-html": "^5.0.5",
@@ -42,7 +41,6 @@
     "file-loader": "^3.0.1",
     "html-webpack-plugin": "^3.2.0",
     "mini-css-extract-plugin": "^0.5.0",
-    "null-loader": "^0.1.1",
     "optimize-css-assets-webpack-plugin": "^5.0.3",
     "pkg": "^4.4.2",
     "terser-webpack-plugin": "^1.4.1",