docs: function remove_listener(event/*, listener*/) {
  
  			// Ignore if not tcn event
  			if(NoPg.isLocalEventName(event)) {
  				return;
  			}
  
  			event = NoPg.parseEventName(event);
  
  			// Stringifying back the event normalizes the original event name
  			var event_name = NoPg.stringifyEventName(event);
  
  			var channel_name = NoPg.parseTCNChannelName(event);
  
  			counter[event_name] -= 1;
  			if(counter[event_name] === 0) {
  				//debug.log('Stopped listening channel ' + channel_name + ' for ' + event_name);
  				self._db.removeListener(channel_name, tcn_listeners[event_name]);
  				delete counter[event_name];
  			}
  
  		}