Never needed.
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 
 static int tree_move_down(struct btrfs_fs_info *fs_info,
                           struct btrfs_path *path,
-                          int *level, int root_level)
+                          int *level)
 {
        struct extent_buffer *eb;
 
                ret = tree_move_next_or_upnext(fs_info, path, level,
                                               root_level);
        } else {
-               ret = tree_move_down(fs_info, path, level, root_level);
+               ret = tree_move_down(fs_info, path, level);
        }
        if (ret >= 0) {
                if (*level == 0)