New comment by tornaria on void-packages repository

https://github.com/void-linux/void-packages/pull/33971#issuecomment-964700315

Comment:
> Else drop the binary and the `/usr/share/doc/rw`, we probably won't need it.

It turns out sagemath doesn't need the binary, so I just removed the binary and docs.

In case anyone ever needs the binary, we can rename the binary or make a separate package with `conflicts=` or whatever...