remove obselete comment

print/resources/inkstitch.js

@@ -663,9 +663,6 @@ $(function() {
             canvas.height = image.height / 96 * 600;
 
             var ctx = canvas.getContext('2d');
-
-            // rendering slows down the browser enough that we can miss sending
-            // pings, so tell the server side to wait for us
             ctx.drawImage(image, 0, 0, image.width, image.height, 0, 0, canvas.width, canvas.height);
             realistic_cache[item] = '<svg width=' + image.width + ' height=' + image.height + ' xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">' +
                                     '<image x=0 y=0 width=' + image.width + ' height=' + image.height + ' xlink:href="' + canvas.toDataURL() + '" />' +