Remove internal metrics.
Remove internal metrics.

With current versions of client_golang, internal metrics are
automatically exported by the client library. (In fact, not all mem
stats are included yet, but that will be added eventually. See
https://github.com/prometheus/client_golang/issues/96 .)

wrouesnel/pushgateway,wrouesnel/pushgateway,prometheus/pushgateway,prometheus/pushgateway,radut/pushgateway,radut/pushgateway,radut/pushgateway,prometheus/pushgateway,wrouesnel/pushgateway