formula-cookbook: remove gdm
formula-cookbook: remove gdm

EricFromCanada/brew,vitorgalvao/brew,reitermarkus/brew,JCount/brew,sjackman/homebrew,Homebrew/brew,mahori/brew,Linuxbrew/brew,ilovezfs/brew,Homebrew/brew,mgrimes/brew,MikeMcQuaid/brew,vitorgalvao/brew,nandub/brew,mahori/brew,claui/brew,JCount/brew,konqui/brew,EricFromCanada/brew,ilovezfs/brew,reitermarkus/brew,reitermarkus/brew,EricFromCanada/brew,vitorgalvao/brew,nandub/brew,mahori/brew,maxim-belkin/brew,vitorgalvao/brew,sjackman/homebrew,DomT4/brew,Linuxbrew/brew,JCount/brew,claui/brew,DomT4/brew,mahori/brew,DomT4/brew,Linuxbrew/brew,mgrimes/brew,Homebrew/brew,nandub/brew,konqui/brew,reitermarkus/brew,JCount/brew,MikeMcQuaid/brew,konqui/brew,MikeMcQuaid/brew,EricFromCanada/brew,claui/brew,ilovezfs/brew,Linuxbrew/brew,claui/brew,nandub/brew,MikeMcQuaid/brew,maxim-belkin/brew,konqui/brew,mgrimes/brew,Homebrew/brew,sjackman/homebrew,sjackman/homebrew,DomT4/brew,maxim-belkin/brew