os/mac: Use delegation for Mach-O methods

Library/Homebrew/os/mac/mach.rb

@@ -2,6 +2,10 @@ require "macho"
 require "os/mac/architecture_list"
 
 module MachOShim
+  extend Forwardable
+
+  delegate [:dylib_id, :rpaths, :delete_rpath] => :macho
+
   # @private
   def macho
     @macho ||= begin
@@ -56,18 +60,6 @@ module MachOShim
     lcs.map(&:name).map(&:to_s).uniq
   end
 
-  def dylib_id
-    macho.dylib_id
-  end
-
-  def rpaths
-    macho.rpaths
-  end
-
-  def delete_rpath(rpath)
-    macho.delete_rpath(rpath)
-  end
-
   def archs
     mach_data.map { |m| m.fetch :arch }.extend(ArchitectureListExtension)
   end