Remove unused utils/homebrew_vars.
Remove unused utils/homebrew_vars.

aw1621107/brew,zmwangx/brew,pseudocody/brew,nandub/brew,tonyg/homebrew,jmsundar/brew,Linuxbrew/brew,konqui/brew,tonyg/homebrew,maxim-belkin/brew,ilovezfs/brew,rwhogg/brew,pseudocody/brew,mahori/brew,Linuxbrew/brew,vitorgalvao/brew,konqui/brew,JCount/brew,Homebrew/brew,mgrimes/brew,sjackman/homebrew,sjackman/homebrew,EricFromCanada/brew,Linuxbrew/brew,hanxue/linuxbrew,mahori/brew,MikeMcQuaid/brew,vitorgalvao/brew,palxex/brew,gregory-nisbet/brew,claui/brew,nandub/brew,amar-laksh/brew_sudo,EricFromCanada/brew,rwhogg/brew,mahori/brew,palxex/brew,nandub/brew,ilovezfs/brew,reitermarkus/brew,mgrimes/brew,reitermarkus/brew,rwhogg/brew,konqui/brew,vitorgalvao/brew,JCount/brew,gregory-nisbet/brew,ilovezfs/brew,nandub/brew,bfontaine/brew,reelsense/brew,konqui/brew,Homebrew/brew,aw1621107/brew,Homebrew/brew,bfontaine/brew,maxim-belkin/brew,hanxue/linuxbrew,bfontaine/brew,EricFromCanada/brew,Homebrew/brew,reelsense/brew,alyssais/brew,tonyg/homebrew,muellermartin/dist,claui/brew,DomT4/brew,sjackman/homebrew,MikeMcQuaid/brew,claui/brew,JCount/brew,sjackman/homebrew,MikeMcQuaid/brew,mgrimes/brew,DomT4/brew,vitorgalvao/brew,hanxue/linuxbrew,DomT4/brew,DomT4/brew,aw1621107/brew,maxim-belkin/brew,claui/brew,amar-laksh/brew_sudo,mahori/brew,zmwangx/brew,palxex/brew,JCount/brew,jmsundar/brew,alyssais/brew,jmsundar/brew,EricFromCanada/brew,gregory-nisbet/brew,reitermarkus/brew,muellermartin/dist,reelsense/brew,reitermarkus/brew,pseudocody/brew,amar-laksh/brew_sudo,MikeMcQuaid/brew,zmwangx/brew,muellermartin/dist,alyssais/brew,Linuxbrew/brew