drop dependency on dummy counter module (#472)
drop dependency on dummy counter module (#472)


googleapis/cloud-trace-nodejs,keymetrics/trassingue,keymetrics/vxx,matthewloring/cloud-trace-nodejs,googleapis/cloud-trace-nodejs,googleapis/cloud-trace-nodejs,matthewloring/cloud-trace-nodejs,keymetrics/trassingue,keymetrics/vxx,matthewloring/cloud-trace-nodejs,googleapis/cloud-trace-nodejs