In most such models, the toilet/shower is optional, there is an alternative with a cabinet.
Do the dealers in your area order those models without the toilet? Depends on their experience with buyer preferences. In my area, which does not sell many pups anyway because of horrid hot weather during most peoples' vacation season, the pups that can have toilets get ordered with toilets (and all get big A/Cs).
If you are not finding what you want on a dealer's lot you may have to order it, Flagstaff/Rockwood and Jayco all build a slide dinette without toilet. You might have to twist a dealer's arm to get what you want, as I've found some resistance to special ordering TTs and PUPs.