Prevent Tango from writing to stdout
Prevent Tango from writing to stdout

Tango initializes itself with a logger to stdout, which gets quite long
during all of the benchmark requests.
https://github.com/lunny/tango/blob/master/tan.go#L199

Instead write to /dev/null (ioutil.Discard).

twanies/go-http-routing-benchmark,vishr/go-http-routing-benchmark,Waynelilns/go-http-routing-benchmark,wmydz1/go-http-routing-benchmark,sunisdown/go-http-routing-benchmark,julienschmidt/go-http-routing-benchmark