message: Remove hello and helo example from messanger profile section
diff: @@ -452,13 +452,7 @@ controller.api.messenger_profile.get_domain_whitelist(function (err, data) {
  });
  -controller.hears(['hello'],'facebook_postback', function(bot, message) {
  - //...
  -});
  -controller.hears(['help'],'facebook_postback', function(bot, message) {
  - //...
  -});
  ```
  