btrfs-progs: remove unused function wait_on_tree_block_writeback

This used to be a kernel stub but has been removed from kernel long time
ago.

Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 0 insertions, 6 deletions

diff --git a/disk-io.c b/disk-io.c
index 0fcc7583..be6e28a4 100644
--- a/disk-io.c
+++ b/disk-io.c
@@ -1827,12 +1827,6 @@ int clean_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
 	return clear_extent_buffer_dirty(eb);
 }
 
-int wait_on_tree_block_writeback(struct btrfs_root *root,
-				 struct extent_buffer *eb)
-{
-	return 0;
-}
-
 void btrfs_mark_buffer_dirty(struct extent_buffer *eb)
 {
 	set_extent_buffer_dirty(eb);