We need to align with the upstream as in here: https://knative.dev/docs/serving/services/service-metrics/#queue-proxy-metrics. Right now we document metrics on both port 9090 and 9091.
Users should only use the metrics on port 9091.
This has created confusion, see case https://access.redhat.com/support/cases/#/case/03882443 for more.

Pls remove table 1 here: https://docs.openshift.com/serverless/1.33/observability/developer-metrics/serverless-monitoring-services-default-metrics.html.