NFS: Clean up nfs4_setup_sequence()

Clean up: Both the NFSv4.0 and NFSv4.1 version of
nfs4_setup_sequence() are used only in fs/nfs/nfs4proc.c.  No need
to keep global header declarations for either version.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/nfs4_fs.h

@@ -247,9 +247,6 @@ static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *ser
 	return server->nfs_client->cl_session;
 }
 
-extern int nfs4_setup_sequence(const struct nfs_server *server,
-		struct nfs4_sequence_args *args, struct nfs4_sequence_res *res,
-		struct rpc_task *task);
 extern int nfs41_setup_sequence(struct nfs4_session *session,
 		struct nfs4_sequence_args *args, struct nfs4_sequence_res *res,
 		struct rpc_task *task);
@@ -278,14 +275,6 @@ static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *ser
 	return NULL;
 }
 
-static inline int nfs4_setup_sequence(const struct nfs_server *server,
-		struct nfs4_sequence_args *args, struct nfs4_sequence_res *res,
-		struct rpc_task *task)
-{
-	rpc_call_start(task);
-	return 0;
-}
-
 static inline bool
 is_ds_only_client(struct nfs_client *clp)
 {

fs/nfs/nfs4proc.c

@@ -697,7 +697,7 @@ int nfs41_setup_sequence(struct nfs4_session *session,
 }
 EXPORT_SYMBOL_GPL(nfs41_setup_sequence);
 
-int nfs4_setup_sequence(const struct nfs_server *server,
+static int nfs4_setup_sequence(const struct nfs_server *server,
 			       struct nfs4_sequence_args *args,
 			       struct nfs4_sequence_res *res,
 			       struct rpc_task *task)
@@ -783,6 +783,14 @@ static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args)
 {
 }
 
+static int nfs4_setup_sequence(const struct nfs_server *server,
+			       struct nfs4_sequence_args *args,
+			       struct nfs4_sequence_res *res,
+			       struct rpc_task *task)
+{
+	rpc_call_start(task);
+	return 0;
+}
 
 static int nfs4_sequence_done(struct rpc_task *task,
 			       struct nfs4_sequence_res *res)