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>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 069cd82..f6be226 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -697,10 +697,10 @@
 }
 EXPORT_SYMBOL_GPL(nfs41_setup_sequence);
 
-int nfs4_setup_sequence(const struct nfs_server *server,
-			struct nfs4_sequence_args *args,
-			struct nfs4_sequence_res *res,
-			struct rpc_task *task)
+static int nfs4_setup_sequence(const struct nfs_server *server,
+			       struct nfs4_sequence_args *args,
+			       struct nfs4_sequence_res *res,
+			       struct rpc_task *task)
 {
 	struct nfs4_session *session = nfs4_get_session(server);
 	int ret = 0;
@@ -783,6 +783,14 @@
 {
 }
 
+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)