Revert "nfsd: remove_stid can be incorporated into nfs4_put_delegation"

This reverts commit 7ebe40f20372688a627ad6c754bc0d1c05df58a9. We forgot
the nfs4_put_delegation call in fs/nfsd/nfs4callback.c which should not
be unhashing the stateid. This lead to warnings from the idr code when
we tried to removed id's twice.

Signed-off-by: J. Bruce Fields <[e-mail]>

fs/nfsd/nfs4state.c

···
 void
 nfs4_put_delegation(struct nfs4_delegation *dp)
 {
-	remove_stid(&dp->dl_stid);
 	if (atomic_dec_and_test(&dp->dl_count)) {
 		nfs4_free_stid(deleg_slab, &dp->dl_stid);
 		num_delegations--;
···
 static void destroy_revoked_delegation(struct nfs4_delegation *dp)
 {
 	list_del_init(&dp->dl_recall_lru);
+	remove_stid(&dp->dl_stid);
 	nfs4_put_delegation(dp);
 }
 
 static void destroy_delegation(struct nfs4_delegation *dp)
 {
 	unhash_delegation(dp);
+	remove_stid(&dp->dl_stid);
 	nfs4_put_delegation(dp);
 }
 
···
 	open->op_delegate_type = NFS4_OPEN_DELEGATE_READ;
 	return;
 out_free:
+	remove_stid(&dp->dl_stid);
 	nfs4_put_delegation(dp);
 out_no_deleg:
 	open->op_delegate_type = NFS4_OPEN_DELEGATE_NONE;