Remove old Prow image pushing job.

[michelle192837]

The new image pushing job has been running successfully for a few months and publishes images to a new location (post-k8s-infra-prow-images, to us-docker.pkg.dev/k8s-infra-prow/images). There should be no use of these images remaining within the kubernetes org once blocking PRs are submitted, so this job should be fine to turn down.

Current uses (based on the images listed in https://github.com/kubernetes-sigs/prow/blob/main/.prow-images.yaml)

/hold

Blocked on #33210 and kubernetes/k8s.io#7120, hold until these are submitted and we wait to see if they cause issues.

Ref #32432

[BenTheElder]

/lgtm
/approve

I believe we can safely merge this now?

[michelle192837]

Believe so!

/hold cancel

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: BenTheElder, michelle192837

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[michelle192837]

Oh right, rebase. Working on it!

[BenTheElder]

needs rebase

[BenTheElder]

/lgtm

[k8s-ci-robot]

@michelle192837: Updated the job-config configmap in namespace default at cluster test-infra-trusted using the following files:

• key prow-postsubmits.yaml using file config/jobs/kubernetes-sigs/prow/prow-postsubmits.yaml

In response to this:

The new image pushing job has been running successfully for a few months and publishes images to a new location (post-k8s-infra-prow-images, to us-docker.pkg.dev/k8s-infra-prow/images). There should be no use of these images remaining within the kubernetes org once blocking PRs are submitted, so this job should be fine to turn down.

Current uses (based on the images listed in https://github.com/kubernetes-sigs/prow/blob/main/.prow-images.yaml)

/hold

Blocked on #33210 and kubernetes/k8s.io#7120, hold until these are submitted and we wait to see if they cause issues.

Ref #32432

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