Removes formula class extension

Library/Homebrew/extend/os/formula.rb

@@ -1,3 +0,0 @@
-# frozen_string_literal: true
-
-require "extend/os/mac/formula" if OS.mac?

Library/Homebrew/extend/os/mac/formula.rb

@@ -1,21 +0,0 @@
-# frozen_string_literal: true
-
-class Formula
-  class << self
-    def uses_from_macos(dep, **args)
-      depends_on(dep) if add_mac_dependency?(args)
-    end
-
-    private
-
-    def add_mac_dependency?(args)
-      args.each { |key, version| args[key] = OS::Mac::Version.from_symbol(version) }
-
-      return false if args[:after] && OS::Mac.version < args[:after]
-
-      return false if args[:before] && OS::Mac.version >= args[:before]
-
-      true
-    end
-  end
-end

Library/Homebrew/formula.rb

@@ -2566,5 +2566,3 @@ class Formula
     end
   end
 end
-
-require "extend/os/formula"