🐛 fix: cannot decline invitation for shared calendar

If the principal of the calendar does not own it, because it is a shared calendar, invitations cannot be declined because the principal is not invited. This fix causes the appointment to be canceled in the calendar instead.

src/clear_bookings.py

@@ -189,7 +189,6 @@ def clear(target_calendars: list, is_test: bool=False) -> dict:
                 # we need to cancel it now
                 elif not event.is_cancelled:
                     if not is_test:
-                        event.obj.decline_invite()
                         event.obj.icalendar_component["status"] = "CANCELLED"
                         event.obj.save()
                     is_cancelled = True