message: Add delete get started button
diff: @@ -440,8 +440,9 @@ function Facebookbot(configuration) {
  },
  delete_get_started: function() {
  var message = {
  - 'setting_type': 'call_to_actions',
  - 'thread_state': 'new_thread',
  + "fields":[
  + "get_started"
  + ]
  };
  facebook_botkit.api.messenger_profile.deleteAPI(message);
  },
  