Btrfs: delete dead code in btrfs_orphan_commit_root()

btrfs_orphan_commit_root() tries to delete an orphan item for a
subvolume in the tree root, but we don't actually insert that item in
the first place. See commit 0a0d4415 ("Btrfs: delete dead code in
btrfs_orphan_add()"). We can get rid of it.
Reviewed-by: NJosef Bacik <jbacik@fb.com>
Signed-off-by: NOmar Sandoval <osandov@fb.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>

fs/btrfs/inode.c

@@ -3307,7 +3307,6 @@ void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans,
 {
 	struct btrfs_fs_info *fs_info = root->fs_info;
 	struct btrfs_block_rsv *block_rsv;
-	int ret;
 
 	if (atomic_read(&root->orphan_inodes) ||
 	    root->orphan_cleanup_state != ORPHAN_CLEANUP_DONE)
@@ -3328,17 +3327,6 @@ void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans,
 	root->orphan_block_rsv = NULL;
 	spin_unlock(&root->orphan_lock);
 
-	if (test_bit(BTRFS_ROOT_ORPHAN_ITEM_INSERTED, &root->state) &&
-	    btrfs_root_refs(&root->root_item) > 0) {
-		ret = btrfs_del_orphan_item(trans, fs_info->tree_root,
-					    root->root_key.objectid);
-		if (ret)
-			btrfs_abort_transaction(trans, ret);
-		else
-			clear_bit(BTRFS_ROOT_ORPHAN_ITEM_INSERTED,
-				  &root->state);
-	}
-
 	if (block_rsv) {
 		WARN_ON(block_rsv->size > 0);
 		btrfs_free_block_rsv(fs_info, block_rsv);