svcauth: remove unused define

Signed-off-by: Simo Sorce <simo@redhat.com>

include/linux/sunrpc/svcauth.h

@@ -16,7 +16,6 @@
 #include <linux/sunrpc/cache.h>
 #include <linux/hash.h>
 
-#define SVC_CRED_NGROUPS	32
 struct svc_cred {
 	uid_t			cr_uid;
 	gid_t			cr_gid;