CBQE-0: remove unnecessary clean up

Change-Id: I66746d0631fb93ec30e16c1e9fa06d04b336709e
Reviewed-on: http://review.couchbase.org/29888
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>