Since we now always generate an avatar do not load the placeholder

The js and php code differ ever so slightly. So having the placeholder
for a second and then the image is just weird.

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

core/js/jquery.avatar.js

@@ -136,11 +136,6 @@
 				}
 			});
 		} else {
-			// We already have the displayname so set the placeholder (to show at least something)
-			if (!hidedefault) {
-				$div.imageplaceholder(displayname);
-			}
-
 			var img = new Image();
 
 			// If the new image loads successfully set it.