Remove k8s hooks for versions prior to 1.20 (#7998)

...bernetes-apps/ansible/templates/coredns-deployment.yml.j2

...s/kubernetes-apps/ansible/templates/dns-autoscaler.yml.j2

.../cloud_controller/oci/templates/oci-cloud-provider.yml.j2

...s/container_runtimes/crun/templates/runtimeclass-crun.yml

...iner_runtimes/gvisor/templates/runtimeclass-gvisor.yml.j2

...s/kata_containers/templates/runtimeclass-kata-qemu.yml.j2

...csi_driver/csi_crd/templates/volumesnapshotclasses.yml.j2

...si_driver/csi_crd/templates/volumesnapshotcontents.yml.j2

...-apps/csi_driver/csi_crd/templates/volumesnapshots.yml.j2

...sphere/templates/vsphere-csi-controller-deployment.yml.j2

...driver/vsphere/templates/vsphere-csi-controller-ss.yml.j2

...tes/external-openstack-cloud-controller-manager-ds.yml.j2

...lates/external-vsphere-cloud-controller-manager-ds.yml.j2

...etrics_server/templates/metrics-server-deployment.yaml.j2