nfsd4: remove unneeded CLAIM_DELEGATE_CUR workaround

0c12eaff "nfsd: don't break lease on
CLAIM_DELEGATE_CUR" was a temporary workaround for a problem fixed
properly in the vfs layer by 778fc546
"locks: fix tracking of inprogress lease breaks", so we can revert that
change (but keeping some minor cleanup from that commit).
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfsd/nfs4state.c

@@ -2653,12 +2653,6 @@ static __be32 nfs4_get_vfs_file(struct svc_rqst *rqstp, struct nfs4_file *fp,
 	int oflag = nfs4_access_to_omode(open->op_share_access);
 	int access = nfs4_access_to_access(open->op_share_access);
 
-	/* CLAIM_DELEGATE_CUR is used in response to a broken lease;
-	 * allowing it to break the lease and return EAGAIN leaves the
-	 * client unable to make progress in returning the delegation */
-	if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
-		access |= NFSD_MAY_NOT_BREAK_LEASE;
-
 	if (!fp->fi_fds[oflag]) {
 		status = nfsd_open(rqstp, cur_fh, S_IFREG, access,
 			&fp->fi_fds[oflag]);