Remove unnecessary build step

package.json

@@ -4,7 +4,7 @@
   "description": "portfolio",
   "main": "index.js",
   "scripts": {
-    "build": "NODE_ENV=production babel src --out-dir dist --copy-files && webpack -p --progress --config webpack.prod.config.js",
+    "build": "NODE_ENV=production webpack -p --progress --config webpack.prod.config.js",
     "start": "NODE_ENV=production node ./src/server.js",
     "dev": "NODE_ENV=development babel-node ./src/server.js --presets es2015,stage-2 ./srcserver.js"
   },