Remove unused method expand_deps.
Remove unused method expand_deps.

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