Remove all stop times from this trip.

    StopTime objects previously returned by GetStopTimes are unchanged but are
    no longer associated with this trip.

def ClearStopTimes(self):
    """Remove all stop times from this trip.

    StopTime objects previously returned by GetStopTimes are unchanged but are
    no longer associated with this trip.
    """
    cursor = self._schedule._connection.cursor()
    cursor.execute('DELETE FROM stop_times WHERE trip_id=?', (self.trip_id,))