remove an inrelevant comment, no functional change

git-svn-id: http://svn.openlayers.org/trunk/openlayers@9735 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Tile/Image/IFrame.js

@@ -222,7 +222,6 @@ OpenLayers.Tile.Image.IFrame = OpenLayers.Class(OpenLayers.Tile.Image, {
         // creation of the form element
         var form = document.createElement('form');
         form.method = 'POST';
-        // call getFullRequestString in a scope without params
         var cacheId = this.layer.params["_OLSALT"];
         cacheId = (cacheId ? cacheId + "_" : "") + this.bounds.toBBOX();
         form.action = OpenLayers.Util.urlAppend(this.layer.url, cacheId);