Clean up check for setting kubeadm certificate key (#4634)

Change-Id: I2c97c4753089eb3ec2e6b01b2681a8be98ecbb57

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

@@ -119,7 +119,6 @@
     - kubeadm_version is version('v1.14.0', '>=')
     - kubeadm_certificate_key is not defined
     - item | trim | match('.*--certificate-key .*')
-    - hostvars['kube-master'][0]['kubeadm_init']['stdout_lines'] is defined
 
 - name: Create hardcoded kubeadm token for joining nodes with 24h expiration (if defined)
   shell: >-