MON-4054: Remove temporary no more needed code

[machine424]

pkg/tasks/prometheusoperator.go: Remove code introduced in https://github.com/openshift/cluster-monitoring-operator/pull/1806

pkg/tasks/{prometheus.go, thanos_ruler_user_workload.go, thanos_querier.go}: Remove cleanup code added in https://github.com/openshift/cluster-monitoring-operator/pull/1731

Was done for 4.15 in https://github.com/openshift/cluster-monitoring-operator/pull/2132

Make some users who don't want to see the unnecessary 404 on 4.14, happy.

• [ ] I added CHANGELOG entry for this change.
• [ ] No user facing changes, so no entry in CHANGELOG was needed.

[openshift-ci-robot]

@machine424: This pull request references MON-3422 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the task to target the "4.14.z" version, but no target version was set.

In response to [this](https://github.com/openshift/cluster-monitoring-operator/pull/2496): >pkg/tasks/prometheusoperator.go: Remove code introduced in https://github.com/openshift/cluster-monitoring-operator/pull/1806 > >pkg/tasks/{prometheus.go, thanos_ruler_user_workload.go, thanos_querier.go}: Remove cleanup code added in https://github.com/openshift/cluster-monitoring-operator/pull/1731 > >Was done for 4.15 in https://github.com/openshift/cluster-monitoring-operator/pull/2132 > >Make some users who don't want to see the unnecessary 404 on 4.14, happy. > > > >* [ ] I added CHANGELOG entry for this change. >* [ ] No user facing changes, so no entry in CHANGELOG was needed. > Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Fcluster-monitoring-operator). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.

[openshift-ci-robot]

@machine424: This pull request references MON-3422 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the task to target only the "4.13.z" version, but multiple target versions were set.

In response to [this](https://github.com/openshift/cluster-monitoring-operator/pull/2496): >pkg/tasks/prometheusoperator.go: Remove code introduced in https://github.com/openshift/cluster-monitoring-operator/pull/1806 > >pkg/tasks/{prometheus.go, thanos_ruler_user_workload.go, thanos_querier.go}: Remove cleanup code added in https://github.com/openshift/cluster-monitoring-operator/pull/1731 > >Was done for 4.15 in https://github.com/openshift/cluster-monitoring-operator/pull/2132 > >Make some users who don't want to see the unnecessary 404 on 4.14, happy. > > > >* [ ] I added CHANGELOG entry for this change. >* [ ] No user facing changes, so no entry in CHANGELOG was needed. > Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Fcluster-monitoring-operator). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.

[openshift-ci-robot]

@machine424: This pull request references MON-3422 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the task to target only the "4.14.z" version, but multiple target versions were set.

In response to [this](https://github.com/openshift/cluster-monitoring-operator/pull/2496): >pkg/tasks/prometheusoperator.go: Remove code introduced in https://github.com/openshift/cluster-monitoring-operator/pull/1806 > >pkg/tasks/{prometheus.go, thanos_ruler_user_workload.go, thanos_querier.go}: Remove cleanup code added in https://github.com/openshift/cluster-monitoring-operator/pull/1731 > >Was done for 4.15 in https://github.com/openshift/cluster-monitoring-operator/pull/2132 > >Make some users who don't want to see the unnecessary 404 on 4.14, happy. > > > >* [ ] I added CHANGELOG entry for this change. >* [ ] No user facing changes, so no entry in CHANGELOG was needed. > Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Fcluster-monitoring-operator). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.

[machine424]

/retest-required

[jan--f]

/lgtm /label backport-risk-assessed

[jan--f]

/retest

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jan--f, machine424

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/openshift/cluster-monitoring-operator/blob/release-4.14/OWNERS)~~ [jan--f] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[machine424]

/retitle MON-4054: Remove temporary no more needed code

[openshift-ci-robot]

@machine424: This pull request references MON-4054 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the task to target only the "4.14.z" version, but multiple target versions were set.

In response to [this](https://github.com/openshift/cluster-monitoring-operator/pull/2496): >pkg/tasks/prometheusoperator.go: Remove code introduced in https://github.com/openshift/cluster-monitoring-operator/pull/1806 > >pkg/tasks/{prometheus.go, thanos_ruler_user_workload.go, thanos_querier.go}: Remove cleanup code added in https://github.com/openshift/cluster-monitoring-operator/pull/1731 > >Was done for 4.15 in https://github.com/openshift/cluster-monitoring-operator/pull/2132 > >Make some users who don't want to see the unnecessary 404 on 4.14, happy. > > > >* [ ] I added CHANGELOG entry for this change. >* [ ] No user facing changes, so no entry in CHANGELOG was needed. > Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Fcluster-monitoring-operator). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.

[machine424]

/jira refresh

[openshift-ci-robot]

@machine424: This pull request references MON-4054 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the task to target only the "4.14.z" version, but multiple target versions were set.

In response to [this](https://github.com/openshift/cluster-monitoring-operator/pull/2496#issuecomment-2416603539): >/jira refresh > > Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Fcluster-monitoring-operator). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.

[openshift-ci[bot]]

@machine424: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/rules	4bf6d86aa40238de438c1610beffa33ea4a240cb	link	true	/test rules
ci/prow/go-fmt	4bf6d86aa40238de438c1610beffa33ea4a240cb	link	true	/test go-fmt
ci/prow/e2e-aws-ovn-single-node	4bf6d86aa40238de438c1610beffa33ea4a240cb	link	false	/test e2e-aws-ovn-single-node
ci/prow/vendor	4bf6d86aa40238de438c1610beffa33ea4a240cb	link	true	/test vendor
ci/prow/e2e-agnostic-operator	4bf6d86aa40238de438c1610beffa33ea4a240cb	link	true	/test e2e-agnostic-operator
ci/prow/verify	4bf6d86aa40238de438c1610beffa33ea4a240cb	link	true	/test verify
ci/prow/generate	4bf6d86aa40238de438c1610beffa33ea4a240cb	link	true	/test generate
ci/prow/e2e-aws-ovn-upgrade	4bf6d86aa40238de438c1610beffa33ea4a240cb	link	true	/test e2e-aws-ovn-upgrade
ci/prow/unit	4bf6d86aa40238de438c1610beffa33ea4a240cb	link	true	/test unit
ci/prow/shellcheck	4bf6d86aa40238de438c1610beffa33ea4a240cb	link	true	/test shellcheck
ci/prow/e2e-aws-ovn	4bf6d86aa40238de438c1610beffa33ea4a240cb	link	true	/test e2e-aws-ovn
ci/prow/images	4bf6d86aa40238de438c1610beffa33ea4a240cb	link	true	/test images
ci/prow/jsonnet-fmt	4bf6d86aa40238de438c1610beffa33ea4a240cb	link	true	/test jsonnet-fmt

Full PR test history. Your PR dashboard.

Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository. I understand the commands that are listed [here](https://go.k8s.io/bot-commands).

[machine424]

/jira refresh

[openshift-ci-robot]

@machine424: This pull request references MON-4054 which is a valid jira issue.

In response to [this](https://github.com/openshift/cluster-monitoring-operator/pull/2496#issuecomment-2416976910): >/jira refresh > Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Fcluster-monitoring-operator). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.

[machine424]

cc @juzhao if you could take a look.