rubocop_rspec: don't autocorrect focus.
rubocop_rspec: don't autocorrect focus.

It's annoying to have these autoremoved.

sjackman/homebrew,EricFromCanada/brew,MikeMcQuaid/brew,MikeMcQuaid/brew,EricFromCanada/brew,JCount/brew,nandub/brew,claui/brew,claui/brew,MikeMcQuaid/brew,JCount/brew,Homebrew/brew,Homebrew/brew,sjackman/homebrew,vitorgalvao/brew,sjackman/homebrew,Homebrew/brew,nandub/brew,EricFromCanada/brew,EricFromCanada/brew,MikeMcQuaid/brew,claui/brew,JCount/brew,Homebrew/brew,claui/brew,sjackman/homebrew,vitorgalvao/brew,nandub/brew,vitorgalvao/brew,JCount/brew,nandub/brew,vitorgalvao/brew