Remove rotate_tokens logic

kubeadm never rotates sa.key/sa.pub, so there is no need to delete tokens/restart pods

Signed-off-by: Etienne Champetier <e.champetier@ateme.com>

roles/kubernetes/control-plane/tasks/kubeadm-secondary.yml

@@ -66,7 +66,3 @@
   when:
     - inventory_hostname != groups['kube-master']|first
     - kubeadm_already_run is not defined or not kubeadm_already_run.stat.exists
-
-- name: Set secret_changed to false to avoid extra token rotation
-  set_fact:
-    secret_changed: false