Remove RBAC from boolean checks

roles/kubernetes/preinstall/tasks/verify-settings.yml

@@ -42,7 +42,6 @@
     - { name: efk_enabled, value: "{{ efk_enabled }}" }
     - { name: helm_enabled, value: "{{ helm_enabled }}" }
     - { name: openstack_lbaas_enabled, value: "{{ openstack_lbaas_enabled }}" }
-    - { name: rbac_enabled, value: "{{ rbac_enabled }}" }
   ignore_errors: "{{ ignore_assert_errors }}"
 
 - name: Stop if even number of etcd hosts