diff --git a/activesupport/test/core_ext/object_and_class_ext_test.rb b/activesupport/test/core_ext/object_and_class_ext_test.rb
index 8d748791e3cfb11ef88295b2a3001c3511be6fb2..0f454fdd951220abb9a0aff13aa1b51b1d441b77 100644
--- a/activesupport/test/core_ext/object_and_class_ext_test.rb
+++ b/activesupport/test/core_ext/object_and_class_ext_test.rb
@@ -3,31 +3,6 @@
 require 'active_support/core_ext/object'
 require 'active_support/core_ext/class/subclasses'
 
-class ClassA; end
-class ClassB < ClassA; end
-class ClassC < ClassB; end
-class ClassD < ClassA; end
-
-class ClassI; end
-class ClassJ < ClassI; end
-
-class ClassK
-end
-module Nested
-  class << self
-    def on_const_missing(&callback)
-      @on_const_missing = callback
-    end
-    private
-      def const_missing(mod_id)
-        @on_const_missing[mod_id] if @on_const_missing
-        super
-      end
-  end
-  class ClassL < ClassK
-  end
-end
-
 class ObjectTests < ActiveSupport::TestCase
   class DuckTime
     def acts_like_time?