remove unneeded destroy and initialize function. r=erilem (closes #3341)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@12386 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/ArcGIS93Rest.js

@@ -91,16 +91,6 @@ OpenLayers.Layer.ArcGIS93Rest = OpenLayers.Class(OpenLayers.Layer.Grid, {
         }
     },    
 
-    
-    /**
-     * Method: destroy
-     * Destroy this layer
-     */
-    destroy: function() {
-        // for now, nothing special to do here. 
-        OpenLayers.Layer.Grid.prototype.destroy.apply(this, arguments);  
-    },   
-    
     /**
          * Method: clone
          * Create a clone of this layer