text: Title: Turn off database query
  Body: Hi in another project we are using drf-yasg but in current we have drf-spectacural. We noticed that during shot on endpoint connected to view - SpectacularAPIView.as_view(...) it run queries to database. Is any option to turn off queries to database? I found info like this abotu DjangoFilterBackend that is connected with queries about choices field: "AllValuesFilter: skip choices to prevent DB query" but in version which we are using there is no DjangoFilterExtension class. Any sugestions?