node/webpack: reduce node dependencies left from disfunct features

package.json

 {
   "devDependencies": {
-    "@babel/core": "^7.7.4",
-    "@babel/preset-env": "^7.7.4",
-    "@babel/preset-react": "^7.7.4",
-    "babel-loader": "^8.0.6",
-    "css-loader": "^3.2.0",
-    "file-loader": "^5.0.2",
-    "gulp": "^4.0.2",
+    "@babel/core": "^7.9.0",
+    "@babel/preset-env": "^7.9.5",
+    "@babel/preset-react": "^7.9.4",
+    "babel-loader": "^8.1.0",
     "jquery": "^3.4.1",
-    "mini-css-extract-plugin": "^0.8.0",
-    "node-sass": "^4.13.0",
     "react": "^16.12.0",
     "react-dom": "^16.12.0",
-    "sass-loader": "^8.0.0",
-    "sharp": "^0.23.3",
     "slick-carousel": "^1.8.1",
-    "style-loader": "^1.0.0",
-    "url-loader": "^3.0.0",
-    "watch": "^1.0.2",
     "webpack": "^4.41.2",
-    "webpack-cli": "^3.3.10",
-    "yamljs": "^0.3.0",
-    "yml-loader": "^2.1.0"
+    "webpack-cli": "^3.3.10"
   },
   "dependencies": {}
 }

webpack.config.js

-// ////////////////////////////////////////////////////////////////////////////
-// Run webpack
-// ////////////////////////////////////////////////////////////////////////////
 const path = require("path");
-const ExtractTextPlugin = require("mini-css-extract-plugin");
 
 module.exports = {
   context: __dirname,
@@ -22,31 +18,13 @@ module.exports = {
           }
         }
       },
-      {
-        test: /\.scss$/,
-        use: [{
-            loader: ExtractTextPlugin.loader,
-          },
-          "css-loader",
-          "sass-loader"
-        ]
-      },
       {
         test: /\.(woff|woff2|eot|ttf)$/,
         loader: 'url-loader?limit=100000'
-      },
-      {
-        test: /\.(svg|gif)$/,
-        loader: "file-loader"
       }
     ]
   },
-  plugins: [
-    new ExtractTextPlugin({
-      filename: 'style.css'
-    }),
-  ],
   node: {
     fs: "empty"
   }
-};
\ No newline at end of file
+};