Remove code pushing metrics to a hardcoded Prometheus pushgateway that
is no longer in operation. There's no point supporting the use of a
pushgateway as there's already a full client implemented and since the
master server is not ephemeral or batch job it shouldn't be using a
pushgateway in the first place.
See "useNeuralNetDoleDivider": true,
If this causes issues, simply set it to false in config.json. If you find normal dole division to work badly as well, set disableFairItemDistribution to true.