I don't think Disney's predators all live in the same enclosure.
Warthogs were only here in 2007, and tortoises weren't at the zoo then, so that mix isn't possible. Also, we're not really sure if they are looking for a new tortoise at the moment like you said.
Oh on the website back then it said that the warthogs were either with the tortoises or near them (I might have mis-remembered as it was long ago. It could have said they were where the tortoises used to be. This seems more likely as I also remember something about Capybaras there as well.