block: drop direction param from bio_integrity_copy_user()

direction is determined from bio, which is already passed in. Compute
op_is_write(bio_op(bio)) directly instead of converting it to an iter
direction and back to a bool.

Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Anuj Gupta <anuj20.g@samsung.com>
Link: https://lore.kernel.org/r/20250603183133.1178062-1-csander@purestorage.com


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