control-plane: do not adjust apiserver endpoint (#12870)

This essentially revert the functionnality of 9b0f57a0a (Adjust
endpoints for kube-proxy,controller,scheduler to proper ip (#5150),
2019-09-09).

This is no longer needed since kubeadm now default to use the local
kube-apiserver for control plane components (feature gate
"ControlPlaneKubeletLocalMode")

https://kubernetes.io/docs/reference/setup-tools/kubeadm/kubeadm-init/#feature-gates

roles/kubernetes/control-plane/tasks/main.yml

@@ -99,9 +99,6 @@
   include_tasks: kubeadm-etcd.yml
   when: etcd_deployment_type == "kubeadm"
 
-- name: Include kubeadm secondary server apiserver fixes
-  include_tasks: kubeadm-fix-apiserver.yml
-
 - name: Cleanup unused AuthorizationConfiguration file versions
   file:
     path: "{{ kube_config_dir }}/apiserver-authorization-config-{{ item }}.yaml"