Unregisters an event that was being monitored.

        :param event: Name of the event to monitor
        :param callback: Callback function for when the event is received (Params: event, interface).
        :param selector: `(Optional)` CSS selector for the element(s) you want to monitor

def unregister(self, event, callback, selector=None):
        """
        Unregisters an event that was being monitored.

        :param event: Name of the event to monitor
        :param callback: Callback function for when the event is received (Params: event, interface).
        :param selector: `(Optional)` CSS selector for the element(s) you want to monitor
        """
        self.processor.unregister(event, callback, selector)