Return codes of the following functions are never used in the code:
* bdrv_wait_serialising_requests_locked
* bdrv_wait_serialising_requests
* bdrv_make_request_serialising
Signed-off-by: Denis V. Lunev<den@openvz.org>
CC: Kevin Wolf<kwolf@redhat.com>
CC: Hanna Reitz<hreitz@redhat.com>
CC: Stefan Hajnoczi<stefanha@redhat.com>
CC: Fam Zheng<fam@euphon.net>
CC: Ronnie Sahlberg<ronniesahlberg@gmail.com>
CC: Paolo Bonzini<pbonzini@redhat.com>
CC: Peter Lieven<pl@kamp.de>
CC: Vladimir Sementsov-Ogievskiy<vsementsov@yandex-team.ru>