Remove Aftman

I always get "use Aftman" notification and I hate it. This is the [dead project](https://github.com/LPGhatguy/aftman/issues/75) now. Everyone use either rokit or any other solution, even without a tool-chain manager this is just an annoying message.

<img width="679" height="337" alt="Image" src="https://github.com/user-attachments/assets/327a9345-2ee8-4924-a4c8-04c5d39384a9" />