build:remove uglify from build process and reaplce with terser

app/scripts/webpack.prod.js

@@ -1,6 +1,5 @@
 const TerserPlugin = require('terser-webpack-plugin');
 const merge = require('webpack-merge')
-// const UglifyJSPlugin = require('uglifyjs-webpack-plugin')
 const common = require('./webpack.common.js')
 
 module.exports = merge(common, {
@@ -14,16 +13,4 @@ module.exports = merge(common, {
       }
     })],
   }
-})
-
-
-/* new UglifyJSPlugin({
-  uglifyOptions: {
-    ie8: false,
-    dead_code: true,
-    output: {
-      comments: false,
-      beautify: false
-    }
-  }
-}) */
+})