Remove incorrect manager code

aleksis/apps/alsijil/managers.py

@@ -208,8 +208,4 @@ class DocumentationManager(RecurrencePolymorphicManager):
 class ParticipationStatusManager(RecurrencePolymorphicManager):
     """Manager adding specific methods to participation statuses."""
 
-    def get_queryset(self):
-        """Ensure often used related data are loaded as well."""
-        # return super().get_queryset().select_related("person", "absence_reason", "base_absence")
-        # TODO: `Field ParticipationStatus.person cannot be both deferred and traversed using select_related at the same time.`
-        return super().get_queryset()
+    pass