target: remove sess_kref and ->shutdown_session

Both of them are unused now that drivers handle any delayed session
shutdown internally.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Christoph Hellwig 2016-05-02 15:45:25 +02:00 • committed by Nicholas Bellinger
commit d94331fab6
4 changed files with 3 additions and 41 deletions