ci/hubble: Fully remove Cilium installation
ci/hubble: Fully remove Cilium installation

We are generating the Cilium YAML which contains more pods than just the
Cilium DaemonSet (the `hubble-cli` DaemonSet in this case). Therefore, we
should also remove everything we generate.

Signed-off-by: Sebastian Wicki <db043b2055cb3a47b2eb0b5aebf4e114a8c24a5a@isovalent.com>

michi-covalent/cilium,michi-covalent/cilium,cilium/cilium,tgraf/cilium,tgraf/cilium,tklauser/cilium,tklauser/cilium,tklauser/cilium,tgraf/cilium,tgraf/cilium,tgraf/cilium,tklauser/cilium,michi-covalent/cilium,cilium/cilium,cilium/cilium,michi-covalent/cilium,cilium/cilium,michi-covalent/cilium,tklauser/cilium,cilium-team/cilium,cilium/cilium,tgraf/cilium,cilium-team/cilium