git rm cmd/brew-pull-circle.rb (#136)
git rm cmd/brew-pull-circle.rb (#136)

- None of the core Linux taps (Homebrew/linuxbrew-core, Homebrew/homebrew-xorg) use Circle CI any more. And it's [unsupported in `brew test-bot`](https://github.com/Homebrew/homebrew-test-bot/pull/312).
Linuxbrew/homebrew-developer