libsrdb1: fix bad include

Removed unneeded #include </usr/include/limits.h> which breaks
cross-compiling (#include <limits.h> is enough).

lib/srdb1/db_ut.c

@@ -35,7 +35,6 @@
 #include "../../mem/mem.h"
 #include "../../dprint.h"
 #include <limits.h>
-#include </usr/include/limits.h>
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>