CBQE-0 reduce perfomance output for simple-test

Change-Id: I866ec1fcd90af833b161513e7f0bf7576a896797
Reviewed-on: http://review.couchbase.org/34016
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>