- osdc parameter is useless
- starting with commit 5aea3dcd ("libceph: a major OSD client
  update"), ceph_osdc_start_request() always returns success
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>
Reviewed-by: NAlex Elder <elder@linaro.org>
Reviewed-by: NDavid Disseldorp <ddiss@suse.de>