btrfs: do not pass compressed_bio to submit_compressed_bio()

Parameter struct compressed_bio is not used by the function
submit_compressed_bio(). Remove it.

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>