MB-12222: cleaning up unused stuff

Change-Id: I110244d7b9dc3e4177cf7162a13d3d58f1aef430
Reviewed-on: http://review.couchbase.org/42833
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>