remove unused code (#4981)

roles/download/tasks/main.yml

roles/kubernetes-apps/ansible/templates/dashboard.yml.j2

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

...ernetes-apps/ansible/templates/netchecker-agent-ds.yml.j2

...apps/ansible/templates/netchecker-agent-hostnet-ds.yml.j2

...pps/ansible/templates/netchecker-server-deployment.yml.j2

...etes-apps/ansible/templates/nodelocaldns-daemonset.yml.j2

roles/kubernetes-apps/cluster_roles/tasks/main.yml

roles/kubernetes-apps/cluster_roles/templates/psp.yml.j2

...fs_provisioner/templates/deploy-cephfs-provisioner.yml.j2

..._provisioner/templates/local-volume-provisioner-ds.yml.j2

...r/rbd_provisioner/templates/deploy-rbd-provisioner.yml.j2

roles/kubernetes-apps/helm/tasks/main.yml

...troller/cert_manager/templates/deploy-cert-manager.yml.j2

...ngress_nginx/templates/ds-ingress-nginx-controller.yml.j2

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

...ontroller/calico/templates/calico-kube-controllers.yml.j2

...bernetes-apps/registry/templates/registry-proxy-ds.yml.j2

roles/kubernetes-apps/registry/templates/registry-rs.yml.j2

...ubernetes/master/templates/kubeadm-config.v1beta1.yaml.j2