Remove obsolete token variables

Tokens are generated automatically during init process and on-demand for nodes joining process

inventory/sample/group_vars/all.yml

@@ -96,10 +96,6 @@ bin_dir: /usr/local/bin
 
 ## Uncomment to enable experimental kubeadm deployment mode
 #kubeadm_enabled: false
-#kubeadm_token_first: "{{ lookup('password', inventory_dir + '/credentials/kubeadm_token_first length=6  chars=ascii_lowercase,digits') }}"
-#kubeadm_token_second: "{{ lookup('password', inventory_dir + '/credentials/kubeadm_token_second length=16 chars=ascii_lowercase,digits') }}"
-#kubeadm_token: "{{ kubeadm_token_first }}.{{ kubeadm_token_second }}"
-#
 ## Set these proxy values in order to update package manager and docker daemon to use proxies
 #http_proxy: ""
 #https_proxy: ""