btrfs: remove unused parameters from extent_submit_bio_done_t

Remove parameters not used by any of the callbacks.

Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 6596b69..b77d849 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -100,8 +100,7 @@ typedef blk_status_t (extent_submit_bio_start_t)(void *private_data,
 		struct bio *bio, u64 bio_offset);
 
 typedef blk_status_t (extent_submit_bio_done_t)(void *private_data,
-		struct bio *bio, int mirror_num, unsigned long bio_flags,
-		u64 bio_offset);
+		struct bio *bio, int mirror_num);
 
 struct extent_io_ops {
 	/*