[RESEND PATCH v2 2/3] blk-mq: remove blk_freeze_queue

[Christoph Hellwig]

On Sun, Oct 30, 2022 at 01:26:45PM +0800, Jinlong Chen wrote:
> Nobody is calling blk_freeze_queue except its alias, so remove it.

So while we really do not need both names - the queue freezing is also
used for non-mq drivers, so the naming without the mq is actually the
slightly more correct one.  But for that it should also move out of
blk-mq.c, so I'm not really sure touching this right now is all that
helpful.