Stop cleaning up containerd packages (#12213)

The switch to not use system packages for containerd packages happened
multiples releases ago ; there should not be any up-to-date installation
of kubespray needing that cleanup.

Remove those steps and variables only used by them.

roles/container-engine/containerd/tasks/reset.yml

@@ -1,22 +1,4 @@
 ---
-- name: Containerd | Remove containerd repository for RedHat os family
-  file:
-    path: "{{ yum_repo_dir }}/containerd.repo"
-    state: absent
-  when:
-    - ansible_os_family in ['RedHat']
-  tags:
-    - reset_containerd
-
-- name: Containerd | Remove containerd repository for Debian os family
-  apt_repository:
-    repo: "{{ item }}"
-    state: absent
-  with_items: "{{ containerd_repo_info.repos }}"
-  when: ansible_pkg_mgr == 'apt'
-  tags:
-    - reset_containerd
-
 - name: Containerd | Stop containerd service
   service:
     name: containerd