fix(kyverno): Remove kyverno from setup

It's the 3rd update of kyverno and each time, things break in minor
version. This is no modi operandi for this setup. Things are supposed to
be stable and solid to work with. Kyverno is too unstable for this
use-case.

This time the installation of the pods failed due to wrong deployment
names. This is nothing we change or adjust.

Further the removal doesn't have any major impact on the platform, since
network policies are already deployed via gitops from the `shared/`
directory.

BREAKING CHANGE: Removing kyverno and related CRDs/APIs.