Remove martian chance from salesman spawn

[cyberTripping]

And finally there's the problem that martians just kinda look bad, both compared to the new fancy humans and because the few clothes you can wear, like in the back and glasses slots, obviously don't fit right.

I do think all of that could conceivably be fixed, but for what?

The Martians are cute! You take that back!

Their design is cute, they're just a really aged sprite that doesn't really work with a lot of stuff. Could definitely afford a perspective resprite like other playable races if they gotta stick around.