NFS4.1: remove duplicate variable declaration in filelayout_clear_request_commit

inode is declared twice for no good reason

Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index 634c0bc..5acfd9e 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -793,7 +793,6 @@
 	if (!test_and_clear_bit(PG_COMMIT_TO_DS, &req->wb_flags))
 		goto out;
 	if (list_is_singular(&req->wb_list)) {
-		struct inode *inode = req->wb_context->dentry->d_inode;
 		struct pnfs_layout_segment *lseg;
 
 		/* From here we can find the bucket, but for the moment,