Bug 1165266 - Upgrade Loop's use of eslint to version 0.21.x and eslint-react-plugin to 2.3.x and enable no-undef rule. r=dmose

browser/components/loop/content/js/client.js

@@ -2,9 +2,6 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-/* jshint esnext:true */
-/* global loop:true, hawk, deriveHawkCredentials */
-
 var loop = loop || {};
 loop.Client = (function($) {
   "use strict";