Remove repeated conditional
Remove repeated conditional

The post-install audit methods are not run for keg-only installs, so we
don't need to repeat the conditional here.

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