remove unused deps

package.json

@@ -14,18 +14,14 @@
   "dependencies": {
     "compression": "^1.7.1",
     "cross-env": "^5.1.3",
-    "css-loader": "^0.28.7",
     "express": "^4.16.2",
-    "extract-text-webpack-plugin": "^3.0.2",
     "glob": "^7.1.2",
     "node-fetch": "^2.0.0",
     "npm-run-all": "^4.1.2",
     "sapper": "^0.7.0",
     "serve-static": "^1.13.1",
-    "style-loader": "^0.20.1",
     "svelte": "^1.56.0",
     "svelte-loader": "^2.3.3",
-    "uglifyjs-webpack-plugin": "^1.1.5",
     "webpack": "^4.1.0"
   }
 }