Merge pull request #25778 from tengqm/fix-22624

Remove link to empty list for k8s metrics

Author: k8s-ci-robot

content/en/docs/concepts/cluster-administration/system-metrics.md

@@ -156,5 +156,4 @@ endpoint on the scheduler. You must use the `--show-hidden-metrics-for-version=1
 ## {{% heading "whatsnext" %}}
 
 * Read about the [Prometheus text format](https://github.com/prometheus/docs/blob/master/content/docs/instrumenting/exposition_formats.md#text-based-format) for metrics
-* See the list of [stable Kubernetes metrics](https://github.com/kubernetes/kubernetes/blob/master/test/instrumentation/testdata/stable-metrics-list.yaml)
 * Read about the [Kubernetes deprecation policy](/docs/reference/using-api/deprecation-policy/#deprecating-a-feature-or-behavior)