rm deleted PrometheusRule

[lance5890]

kind of post-cleanup of #461

[coderabbitai]

Walkthrough

A PrometheusRule manifest defining an alert for deprecated OAuth tokens in the OpenShift authentication operator was removed. The 28-line YAML file contained monitoring rules for deprecated token formats.

Changes

Cohort / File(s)	Summary
PrometheusRule Manifest Deletion manifests/0000_90_cluster-authentication-operator_03_prometheusrule.yaml	Removed PrometheusRule resource that monitored for deprecated OAuth tokens not prefixed with "sha256~". The alert rule (DeprecatedOAuthTokensInUse) with 1-hour evaluation window was deleted entirely.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

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[openshift-ci]

Hi @lance5890. Thanks for your PR.

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[openshift-ci]

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