NFSD: Remove lockdep assertion from unhash_and_release_locked()

IIUC, holding the hash bucket lock is needed only in
nfsd_file_unhash, and there is already a lockdep assertion there.
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

fs/nfsd/filecache.c

@@ -300,8 +300,6 @@ nfsd_file_unhash(struct nfsd_file *nf)
 static bool
 nfsd_file_unhash_and_release_locked(struct nfsd_file *nf, struct list_head *dispose)
 {
-	lockdep_assert_held(&nfsd_file_hashtbl[nf->nf_hashval].nfb_lock);
-
 	trace_nfsd_file_unhash_and_release_locked(nf);
 	if (!nfsd_file_unhash(nf))
 		return false;