diff --git a/src/main/ruby/truffleruby/core/module.rb b/src/main/ruby/truffleruby/core/module.rb
index 4528ff5bf345..15e791db7fdc 100644
--- a/src/main/ruby/truffleruby/core/module.rb
+++ b/src/main/ruby/truffleruby/core/module.rb
@@ -153,12 +153,3 @@ def self.constants(inherited = undefined)
     end
   end
 end
-
-class Refinement < Module
-  def import_methods(mod)
-    (mod.instance_methods(false) + mod.private_instance_methods(false)).each do |name|
-      # TODO: apply refinements to these methods
-      define_method(name, mod.instance_method(name))
-    end
-  end
-end