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/ingress_controller/ingress_nginx/tasks/main.yml

@@ -1,23 +1,5 @@
 ---
 
-- name: NGINX Ingress Controller | Remove legacy addon dir and manifests
-  file:
-    path: "{{ kube_config_dir }}/addons/ingress_nginx"
-    state: absent
-  when:
-    - inventory_hostname == groups['kube-master'][0]
-  tags:
-    - upgrade
-
-- name: NGINX Ingress Controller | Remove legacy namespace
-  shell: |
-    {{ bin_dir }}/kubectl delete namespace {{ ingress_nginx_namespace }}
-  ignore_errors: yes
-  when:
-    - inventory_hostname == groups['kube-master'][0]
-  tags:
-    - upgrade
-
 - name: NGINX Ingress Controller | Create addon dir
   file:
     path: "{{ kube_config_dir }}/addons/ingress_nginx"