Remove syncplay worker

This was an attempt to fix issues on Safari

webpack.dev.js

@@ -48,10 +48,6 @@ module.exports = merge(common, {
             {
                 test: /\.(wav)$/i,
                 use: ["file-loader"]
-            },
-            {
-                test: /\.worker.js$/,
-                use: ["worker"]
             }
         ]
     }