There are really four options:
1) removed intentionally because of performance
2) removed intentionally because it was bugged
3) included but bug prevents it from showing
4) unintentionally shipped without feature
Option 1 really isn't likely at all. Option 2 doesn't make a lot of sense. The game has already been patched, I think. Not sure what the issue would be. My guess is 3 or 4.
5. Lazy Devs.