KeyError: 'delete_selected'

Sentry Issue: CONCREXIT-1S

KeyError: 'delete_selected'
(7 additional frame(s) were not displayed)
...
  File "django/utils/decorators.py", line 45, in _wrapper
    return bound_method(*args, **kwargs)
  File "django/utils/decorators.py", line 142, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File "django/contrib/admin/options.py", line 1685, in changelist_view
    cl = self.get_changelist_instance(request)
  File "django/contrib/admin/options.py", line 727, in get_changelist_instance
    if self.get_actions(request):
  File "events/admin.py", line 205, in get_actions
    del actions['delete_selected']