cpu_sup is not available for Windows, call to the service produces noise in logs

[velimir]

https://github.com/emqx/emqx-statsd/blob/fa4a2aba27c3d38d781f3185d039cb38dc7e183a/src/emqx_statsd.erl#L354

OS_MON (cpu_sup) called by <PID>, unavailable

It was fixed in emqx.

[gilbertwong96]

Yes. :)