Update 0040-verify-settings.yml (#10699)

remove embedded template

roles/kubernetes/preinstall/tasks/0040-verify-settings.yml

 ---
 - name: Stop if either kube_control_plane or kube_node group is empty
   assert:
-    that: "groups.get('{{ item }}')"
+    that: "groups.get( item )"
   with_items:
     - kube_control_plane
     - kube_node