Cleanup, remvoe old menu code

src/browser/menus/context.js

@@ -1,26 +0,0 @@
-'use strict';
-
-const remote = require('electron').remote;
-const Menu = remote.Menu;
-const MenuItem = remote.MenuItem;
-
-var createDefault = function() {
-  var menu = new Menu();
-  menu.append(new MenuItem({
-    role: 'cut'
-  }));
-  menu.append(new MenuItem({
-    role: 'copy'
-  }));
-  menu.append(new MenuItem({
-    role: 'paste'
-  }));
-  menu.append(new MenuItem({
-    role: 'selectall'
-  }));
-  return menu;
-};
-
-module.exports = {
-  createDefault: createDefault
-};