remove uneffective test

RubyVM.stat[:global_method_state] is no longer available so
this test doesn't check any more.

test/ruby/test_module.rb

@@ -2529,31 +2529,6 @@ class TestModule < Test::Unit::TestCase
     assert_raise(NoMethodError, bug8284) {Object.remove_const}
   end
 
-  def test_include_module_with_constants_does_not_invalidate_method_cache
-    assert_in_out_err([], <<-RUBY, %w(123 456 true), [])
-      A = 123
-
-      class Foo
-        def self.a
-          A
-        end
-      end
-
-      module M
-        A = 456
-      end
-
-      puts Foo.a
-      starting = RubyVM.stat[:global_method_state]
-
-      Foo.send(:include, M)
-
-      ending = RubyVM.stat[:global_method_state]
-      puts Foo.a
-      puts starting == ending
-    RUBY
-  end
-
   def test_return_value_of_define_method
     retvals = []
     Class.new.class_eval do