Remove duplicated maxPending
Remove duplicated maxPending

Change-Id: I62176d36b4cf7962dc0c5c3c420d02dc75dbe2c7
Reviewed-on: http://review.couchbase.org/45795
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Li Yang <b23b5fb240ae87c71e4667a21ecd9f27d5443975@gmail.com>

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