All driver uses are gone now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20210624081012.256464-1-hch@lst.de


Signed-off-by: Jens Axboe <axboe@kernel.dk>