Revert "keg_relocate: Exclude hardlinks from mach_o_files."

This reverts commit 3e5e14a.

Library/Homebrew/keg_relocate.rb

@@ -157,12 +157,8 @@ def find_dylib(bad_name)
   end
 
   def mach_o_files
-    hardlinks = Set.new
     mach_o_files = []
     path.find do |pn|
-      # if we've already processed a file, ignore its hardlinks (which have the same dev ID and inode)
-      # this prevents relocations from being performed on a binary more than once
-      next unless hardlinks.add? [pn.stat.dev, pn.stat.ino]
       next if pn.symlink? || pn.directory?
       mach_o_files << pn if pn.dylib? || pn.mach_o_bundle? || pn.mach_o_executable?
     end