protocol: Avoid Tk event_generate() calls during shutdown

# Conflicts:
#	protocol.py

protocol.py

@@ -34,9 +34,7 @@ class GenericProtocolHandler(object):
     def event(self, url):
         self.lastpayload = url
 
-        logger.trace(f'Payload: {self.lastpayload}')
         if not config.shutting_down:
-            logger.debug('event_generate("<<CompanionAuthEvent>>"')
             self.master.event_generate('<<CompanionAuthEvent>>', when="tail")