samples: demos: remove commented code

Signed-off-by: Tatiana Leon <Tatiana.Leon@digi.com>

Author: tatianaleon

samples/xbee/demos/NetworkUpdateSample/main.py

@@ -548,8 +548,6 @@ def _process_update_request(self, update_tasks):
         result = xnet.update_nodes(update_tasks.values())
         if log.isEnabledFor(logging.INFO):
             self._show_result(result, update_tasks)
-        # time.sleep(20)
-        # log.info("Finished!!!!!!!!!!!!!!!!!!!!!!!!!")
 
         # Clear the update tasks after finishing
         update_tasks.clear()