block: revert 4f1e9630 ("blk-throtl: optimize IOPS throttle for large IO scenarios")

Revert commit 4f1e9630 ("blk-throtl: optimize IOPS throttle for large
IO scenarios") since we have another easier way to address this issue and
get better iops throttling result.

Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20220216044514.2903784-9-ming.lei@redhat.com


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