remove unused method
remove unused method

Change-Id: I9b5f1e094dded6e43c00b2477185a8a9afc0ea13
Reviewed-on: http://review.couchbase.org/37466
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Pavel Paulau <dd88eded64e90046a680e3a6c0828ceb8fe8a0e7@gmail.com>

EricACooper/perfrunner,PaintScratcher/perfrunner,couchbase/perfrunner,vmx/perfrunner,pavel-paulau/perfrunner,couchbase/perfrunner,thomas-couchbase/perfrunner,couchbase/perfrunner,pavel-paulau/perfrunner,EricACooper/perfrunner,mikewied/perfrunner,hsharsha/perfrunner,EricACooper/perfrunner,hsharsha/perfrunner,pavel-paulau/perfrunner,vmx/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,mikewied/perfrunner,dkao-cb/perfrunner,EricACooper/perfrunner,pavel-paulau/perfrunner,thomas-couchbase/perfrunner,PaintScratcher/perfrunner,pavel-paulau/perfrunner,dkao-cb/perfrunner