[PATCH] nvme: remove support or stream based temperature hint

[Keith Busch]

On Thu, Mar 03, 2022 at 01:50:49PM +0300, Christoph Hellwig wrote:
> This support was added for RocksDB, but RocksDB ended up not using it.
> At the same time drives on the open marked (vs those build for OEMs
> for non-Linux support) that actually support streams are extremly
> rare.  Don't bloat the nvme driver for it.

Fine with me. It looks like the early interest in streams never really
materialized, so it's unlikely we'll hear any complaints. 

You can remove nr_streams from 'struct nvme_ctrl' while you're at it.

Reviewed-by: Keith Busch <kbusch at kernel.org>

And without nvme, there doesn't appear to be a real user for the
write_hint anymore. All you can really do with it now is prevent
merging, which doesn't seem useful.