.github: remove cirrus rerun action

As pointed out in buildah[1] the action is broken in bad ways where it can
trigger 1000+ rerun wasting our cloud resources.

Get rid of it for now until we find something better or can properly
identify and fix the root cause.

[1] https://github.com/containers/buildah/issues/6035

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

.github/workflows/rerun_cirrus_cron.yml

@@ -1,78 +0,0 @@
----
-
-# Format Ref: https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-syntax-for-github-actions
-
-# Required to un-FUBAR default ${{github.workflow}} value
-name: rerun_cirrus_cron
-
-on:
-    # Note: This only applies to the main branch.
-    schedule:
-        # N/B: This should fire about an hour prior to check_cirrus_cron
-        # so the re-runs have a chance to complete.
-        - cron:  '01 01 * * 1-5'
-    # Debug: Allow triggering job manually in github-actions WebUI
-    workflow_dispatch: {}
-    # Allow reuse of this workflow by other repositories
-    # Ref: https://docs.github.com/en/actions/using-workflows/reusing-workflows
-    workflow_call:
-      secrets:
-        SECRET_CIRRUS_API_KEY:
-          required : true
-        ACTION_MAIL_SERVER:
-          required: true
-        ACTION_MAIL_USERNAME:
-          required: true
-        ACTION_MAIL_PASSWORD:
-          required: true
-        ACTION_MAIL_SENDER:
-          required: true
-
-env:
-    # CSV listing of e-mail addresses for delivery failure or error notices
-    RCPTCSV: podman-monitor@lists.podman.io
-    # Filename for table of build-id to cron-name data
-    # (must be in $GITHUB_WORKSPACE/artifacts/)
-    ID_NAME_FILEPATH: './artifacts/id_name.txt'
-
-permissions:
-  contents: read
-
-jobs:
-    cron_rerun:
-        runs-on: ubuntu-latest
-        steps:
-            - uses: actions/checkout@v4
-              with:
-                  # All scripts used by this workflow live in podman repo.
-                  repository: "containers/podman"
-                  ref: "main"
-                  persist-credentials: false
-
-            - name: Get failed cron names and Build IDs
-              id: cron
-              run: './.github/actions/check_cirrus_cron/cron_failures.sh'
-
-            - if: steps.cron.outputs.failures > 0
-              shell: bash
-              env:
-                SECRET_CIRRUS_API_KEY: ${{ secrets.SECRET_CIRRUS_API_KEY }}
-              run: './.github/actions/check_cirrus_cron/rerun_failed_tasks.sh'
-
-            - uses: actions/upload-artifact@v4
-              with:
-                  name: ${{ github.job }}_artifacts
-                  path: artifacts/*
-
-            - if: failure()
-              name: Send error notification e-mail
-              uses: dawidd6/action-send-mail@v3.12.0
-              with:
-                server_address: ${{secrets.ACTION_MAIL_SERVER}}
-                server_port: 465
-                username: ${{secrets.ACTION_MAIL_USERNAME}}
-                password: ${{secrets.ACTION_MAIL_PASSWORD}}
-                subject: Github workflow error on ${{github.repository}}
-                to: ${{env.RCPTCSV}}
-                from: ${{secrets.ACTION_MAIL_SENDER}}
-                body: "Job failed: https://github.com/${{github.repository}}/actions/runs/${{github.run_id}}"