Remove obsolete Homebrew env var: 'HOMEBREW_INSTALL_CLEANUP' 🗑
Remove obsolete Homebrew env var: 'HOMEBREW_INSTALL_CLEANUP' 🗑

HOMEBREW_INSTALL_CLEANUP, introduced in Homebrew 1.9, has no effect in 2.0:
periodic cleanup is the default behaviour.

nicokosi/dotfiles,nicokosi/dotfiles