Remove unused assignments (clion)

Change-Id: Ib8850a2f939663417f82e8ec26cfd633aa5bf2f2
Reviewed-on: http://review.couchbase.org/41140
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>
Tested-by: Trond Norbye <trond.norbye@gmail.com>