Purge legacy cleanup tasks from older than 1 year (#4450)

We don't need to support upgrades from 2 year old installs,
just from the last major version.

Also changed most retried tasks to 1s delay instead of longer.

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

@@ -7,8 +7,8 @@
     client_key: "{{ kube_apiserver_client_key }}"
   register: result
   until: result.status == 200
-  retries: 10
-  delay: 2
+  retries: 20
+  delay: 1
   when: inventory_hostname == groups['kube-master'][0]
 
 - name: Kubernetes Apps | Cleanup DNS