Revert "extend/os/mac/keg_relocate: fix relocation of duplicate `RPATH`s"
Revert "extend/os/mac/keg_relocate: fix relocation of duplicate `RPATH`s"

Upon reflection, I realised that this is probably a bug in `ruby-macho`,
and should be fixed there instead.

Needs https://github.com/Homebrew/ruby-macho/pull/362.

This reverts commit e8b5eb7e42c925b7cc10c78a029b8c70e4d7965b.

nandub/brew,Homebrew/brew,nandub/brew,MikeMcQuaid/brew,nandub/brew,JCount/brew,MikeMcQuaid/brew,MikeMcQuaid/brew,nandub/brew,Homebrew/brew,JCount/brew,JCount/brew,JCount/brew,Homebrew/brew,Homebrew/brew,MikeMcQuaid/brew