Less context

This change removes all changes that were anticipated here for
WMS GetFeatureInfo handling, including the IWMS interface and
the goog.provide for 'ol.tilegrid'. I'll create a separate pull
request for WMS GetFeatureInfo eventually, taking into account
the suggestions from the discussion in #402.

src/ol/renderer/canvas/canvasvectorlayerrenderer.js

@@ -14,7 +14,6 @@ goog.require('ol.geom.GeometryType');
 goog.require('ol.layer.Vector');
 goog.require('ol.renderer.canvas.Layer');
 goog.require('ol.renderer.canvas.VectorRenderer');
-goog.require('ol.tilegrid');
 goog.require('ol.tilegrid.TileGrid');