Don't emit a useless warning

The warning may have had some value at some point, but if
people uninstall large icons just to make the warning go
away, it does more harm than good. So just remove it.

gdk/x11/gdkwindow-x11.c

@@ -3839,10 +3839,7 @@ gdk_x11_window_set_icon_list (GdkWindow *window,
       
       /* silently ignore overlarge icons */
       if (size + 2 + width * height > GDK_SELECTION_MAX_SIZE(display))
-	{
-	  g_warning ("gdk_window_set_icon_list: icon too large (%dx%d)", width, height);
-	  break;
-	}
+	break;
      
       n++;
       size += 2 + width * height;