nfsd4: remove nfs4_acl_new

This is a not-that-useful kmalloc wrapper.  And I'd like one of the
callers to actually use something other than kmalloc.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/acl.h b/fs/nfsd/acl.h
index a986ceb..4cd7c69 100644
--- a/fs/nfsd/acl.h
+++ b/fs/nfsd/acl.h
@@ -47,7 +47,7 @@
 #define NFS4_ACL_MAX ((PAGE_SIZE - sizeof(struct nfs4_acl)) \
 			/ sizeof(struct nfs4_ace))
 
-struct nfs4_acl *nfs4_acl_new(int);
+int nfs4_acl_bytes(int entries);
 int nfs4_acl_get_whotype(char *, u32);
 __be32 nfs4_acl_write_who(struct xdr_stream *xdr, int who);