mutter comment out patch

--- mutter-3.14.2/src/backends/x11/meta-monitor-manager-xrandr.c    2014-11-12 18:27:07.000000000 +0100
+++ mutter-3.14.2/src/backends/x11/meta-monitor-manager-xrandr.c    2014-12-17 18:11:05.906206113 +0100
@@ -933,11 +933,11 @@
                                DefaultRootWindow (manager_xrandr->xdisplay),
                                (XID)output_info->output->winsys_id);
         }
-
+/*
       output_set_presentation_xrandr (manager_xrandr,
                                       output_info->output,
                                       output_info->is_presentation);
-
+*/
       output->is_primary = output_info->is_primary;
       output->is_presentation = output_info->is_presentation;
     }