Remove 'drawn' property from Tiles. (Closes #1018)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@4557 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/Grid.js

@@ -548,18 +548,6 @@ OpenLayers.Layer.Grid = OpenLayers.Class(OpenLayers.Layer.HTTPRequest, {
                 break;
             }
         };
-        if (this.buffer == 0) {
-            for (var r=0, rl=this.grid.length; r<rl; r++) {
-                var row = this.grid[r];
-                for (var c=0, cl=row.length; c<cl; c++) {
-                    var tile = row[c];
-                    if (!tile.drawn && 
-                         tile.bounds.intersectsBounds(bounds, false)) {
-                        tile.draw();
-                    }
-                }
-            }
-        }
     },
 
     /**