totemmrp: Allow compilation without warnings

Signed-off-by: Jan Friesse <jfriesse@redhat.com>
Reviewed-by: Steven Dake <sdake@redhat.com>

exec/totemmrp.c

@@ -270,9 +270,5 @@ int totemmrp_member_remove (
 
 void totemmrp_threaded_mode_enable (void)
 {
-	int res;
-
 	totemsrp_threaded_mode_enable (totemsrp_context);
-
-	return (res);
 }