ocp-arch-lab-materials/playbooks/roles/clean-cluster/tasks/main.yml

---
# Cleans up the cluster of any unnecessary baggage.
#
- name: Remove kubeadmin secret
  k8s:
    kubeconfig: tmp/kubeconfig-ocp4
    validate_certs: no
    api_version: v1
    kind: secret
    name: kubeadmin
    namespace: kube-system
    state: absent
...