Revert "CircleCI: Use Homebrew/brew [Linux]"
Revert "CircleCI: Use Homebrew/brew [Linux]"

This reverts commit 3a6a78c81404d85079cd114aa05fef690e51a88f.

rwhogg/homebrew-core,maxim-belkin/homebrew-core,rwhogg/homebrew-core,maxim-belkin/homebrew-core,Linuxbrew/homebrew-core,LinuxbrewTestBot/homebrew-core,Linuxbrew/homebrew-core,LinuxbrewTestBot/homebrew-core