Remove admin.conf removal

kubeadm is the default for a long time now,
and admin.conf is created by it, so let kubeadm handle it

Signed-off-by: Etienne Champetier <e.champetier@ateme.com>
(cherry picked from commit 280036fad6)

roles/kubernetes/master/tasks/kubeadm-setup.yml

@@ -27,13 +27,6 @@
     get_mime: no
   register: kubeadm_already_run
 
-- name: kubeadm | Delete old admin.conf
-  file:
-    path: "{{ kube_config_dir }}/admin.conf"
-    state: absent
-  when:
-    - not kubeadm_already_run.stat.exists
-
 - name: kubeadm | aggregate all SANs
   set_fact:
     apiserver_sans: "{{ (sans_base + groups['kube-master'] + sans_lb + sans_lb_ip + sans_supp + sans_access_ip + sans_ip + sans_address + sans_override + sans_hostname + sans_fqdn) | unique }}"