Remove duplicated whitelist entry in skype main.yml

roles/matrix-bridge-mx-puppet-skype/defaults/main.yml

@@ -139,7 +139,6 @@ matrix_mx_puppet_skype_configuration_yaml: |
 
   provisioning:
     # Regex of Matrix IDs allowed to use the puppet bridge
-    whitelist:
     whitelist: {{ matrix_mx_puppet_skype_provisioning_whitelist|to_json }}
       # Allow a specific user
       #- "@user:server\\.com"