Red Hat Trusted App Pipeline purge cosign

[red-hat-konflux]

Pipelines as Code configuration removal

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: red-hat-trusted-app-pipeline[bot]
Once this PR has been reviewed and has the lgtm label, please assign cooktheryan for approval. For more information see the Kubernetes Code Review Process.

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[openshift-ci]

Hi @red-hat-trusted-app-pipeline[bot]. Thanks for your PR.

I'm waiting for a securesign member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.