Remove unneeded goog.provides/requires for typedefs

In general, typedefs do not need and should not have goog.require/provide

src/ol/source/zoomifysource.js

@@ -3,7 +3,6 @@ goog.provide('ol.source.Zoomify');
 goog.require('goog.asserts');
 goog.require('ol');
 goog.require('ol.ImageTile');
-goog.require('ol.TileCoord');
 goog.require('ol.TileState');
 goog.require('ol.dom');
 goog.require('ol.extent');