lint fix

Author: photonstorm

src/gameobjects/container/ContainerWebGLRenderer.js

@@ -5,8 +5,6 @@
  * @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
  */
 
-var GameObject = require('../GameObject');
-
 /**
  * Renders this Game Object with the WebGL Renderer to the given Camera.
  * The object will not render if any of its renderFlags are set or it is being actively filtered out by the Camera.