remove e6-shim

package.json

@@ -44,7 +44,6 @@
     "brace": "^0.8.0",
     "browserify": "^13.0.0",
     "csslint": "^1.0.2",
-    "es6-shim": "^0.35.1",
     "ethereum-remix": "https://github.com/ethereum/remix",
     "ethereumjs-abi": "^0.6.4",
     "ethereumjs-block": "^1.2.2",

src/index.js

 'use strict'
 
-require('es6-shim')
 var app = require('./app.js')
 var $ = require('jquery')