code: def test_remove_aliases(self):
      self.dispatcher.deregister_calendar("ICE_ALIAS_ALIAS")
      with self.assertRaises(InvalidCalendarName):
          self.dispatcher.get_calendar("ICE_ALIAS_ALIAS")
  
file_path: catalyst/tests/calendars/test_calendar_dispatcher.py
imports: from catalyst.errors import CalendarNameCollision, CyclicCalendarAlias, InvalidCalendarName
  from catalyst.testing import CatalystTestCase
  from catalyst.utils.calendars.calendar_utils import TradingCalendarDispatcher
  from catalyst.utils.calendars.exchange_calendar_ice import ICEExchangeCalendar
label_desc: Use image node_id 5 for calling the CalendarAliasTestCase obj's underlying member method code with example usage: obj.test_remove_aliases() without return types