.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

@@ -1,19 +0,0 @@
----
-
-# See also: https://github.com/containers/podman/blob/main/.github/workflows/rerun_cirrus_cron.yml
-
-on:
-  # Note: This only applies to the default branch.
-  schedule:
-    # N/B: This should correspond to a period slightly after
-    # the last job finishes running.  See job defs. at:
-    # https://cirrus-ci.com/settings/repository/6706677464432640
-    - cron:  '01 01 * * 1-5'
-  # Debug: Allow triggering job manually in github-actions WebUI
-  workflow_dispatch: {}
-
-jobs:
-  # Ref: https://docs.github.com/en/actions/using-workflows/reusing-workflows
-  call_cron_rerun:
-    uses: containers/podman/.github/workflows/rerun_cirrus_cron.yml@main
-    secrets: inherit