cluster-role-metrics-server-resources.yaml seems useless

[caozhuozi]

What happened?:
Why cluster-role-metrics-server-resources.yaml is provided? I don't see any ClusterRoleBindings use this role.

Actually, in the cluster-role-binding-hpa-custom-metrics.yaml, it uses the following cluster role which is different from the one defined in cluster-role-metrics-server-resources.yaml

custom-metrics-server-resources

- custom-metrics-server-resources
+ resource-metrics-server-resources

What did you expect to happen?:

remve it from the manifest folder.

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