remove old patch

package/libmpdclient/patches/patch-src_sync_c.orig

@@ -1,10 +0,0 @@
---- libmpdclient-2.8.orig/src/sync.c	2010-01-01 15:17:56.000000000 +0100
-+++ libmpdclient-2.8/src/sync.c	2013-09-18 11:04:15.000000000 +0200
-@@ -34,6 +34,7 @@
- #include <stdlib.h>
- #include <stdio.h>
- #include <fcntl.h>
-+#include <time.h>
- #include <unistd.h>
- 
- static bool