Remove `brew install foo --help`
Remove `brew install foo --help`

This command was undocumented, only for autotools, and it is enough to do
`brew install foo -i` and then `./configure --help` in two steps.

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