refactor(alternatives): remove non-maintained

[sasial-dev]

trafficstars

Removes unmaintained rojo alternatives

[sasial-dev]

Crazily, only https://github.com/anaminus/rbxmk is still maintained! Everyone's flocked to rojo!

[LPGhatguy]

This whole page doesn't really make sense if we remove all of these other tools.

It's possible that, since there are no other alternatives to Rojo anymore, we should just remove this page.

[Dekkonot]

I agree with year-ago LPG here! If there's not any alternatives to Rojo anymore (rbxmk is more akin to Remodel/Lune), we should just nix this page.