.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 <[email protected]>