Revert "blk-mq: fix hctx/ctx kobject use-after-free"

This reverts commit 76d697d10769048e5721510100bf3a9413a56385.

The commit 76d697d10769048 causes general protection fault
reported from Bart Van Assche:

	https://lkml.org/lkml/2015/1/28/334

Reported-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2 files changed