ino: do not generate easy_install.pth

As per [the wiki][], and mentioned in #29518

[the wiki]:
https://github.com/Homebrew/homebrew/wiki/Homebrew-and-Python#if-the-software-provides-a-setuppy
Typically we say "no" to keep the diff clean, but it looks like there aren't very many in this file so go for it if you want to.