rubocop: remove BINARY_URLS_WHITELIST and rust nightly
rubocop: remove BINARY_URLS_WHITELIST and rust nightly

This url is not used anymore, we replaced it with a new stable version
of rust.

mahori/brew,reitermarkus/brew,sjackman/homebrew,Homebrew/brew,MikeMcQuaid/brew,nandub/brew,vitorgalvao/brew,Homebrew/brew,MikeMcQuaid/brew,vitorgalvao/brew,nandub/brew,claui/brew,sjackman/homebrew,mahori/brew,sjackman/homebrew,nandub/brew,MikeMcQuaid/brew,EricFromCanada/brew,konqui/brew,claui/brew,nandub/brew,JCount/brew,sjackman/homebrew,mahori/brew,JCount/brew,vitorgalvao/brew,EricFromCanada/brew,EricFromCanada/brew,konqui/brew,vitorgalvao/brew,JCount/brew,claui/brew,konqui/brew,mahori/brew,reitermarkus/brew,reitermarkus/brew,MikeMcQuaid/brew,Homebrew/brew,konqui/brew,Homebrew/brew,claui/brew,EricFromCanada/brew,JCount/brew,reitermarkus/brew