2 files changed, 1 insertions, 13 deletions
diff --git a/activesupport/lib/active_support/core_ext/kernel/singleton_class.rb b/activesupport/lib/active_support/core_ext/kernel/singleton_class.rb
index 33612155fb..9bbf1bbd73 100644
--- a/activesupport/lib/active_support/core_ext/kernel/singleton_class.rb
+++ b/activesupport/lib/active_support/core_ext/kernel/singleton_class.rb
@@ -1,11 +1,4 @@
 module Kernel
-  # Returns the object's singleton class.
-  def singleton_class
-    class << self
-      self
-    end
-  end unless respond_to?(:singleton_class) # exists in 1.9.2
-
   # class_eval on an object acts like singleton_class.class_eval.
   def class_eval(*args, &block)
     singleton_class.class_eval(*args, &block)
diff --git a/activesupport/test/core_ext/kernel_test.rb b/activesupport/test/core_ext/kernel_test.rb
index 995bc0751a..73a7179872 100644
--- a/activesupport/test/core_ext/kernel_test.rb
+++ b/activesupport/test/core_ext/kernel_test.rb
@@ -42,11 +42,6 @@ class KernelTest < Test::Unit::TestCase
     assert_equal 1, silence_stderr { 1 }
   end
 
-  def test_singleton_class
-    o = Object.new
-    assert_equal class << o; self end, o.singleton_class
-  end
-
   def test_class_eval
     o = Object.new
     class << o; @x = 1; end
@@ -112,4 +107,4 @@ class KernelDebuggerTest < Test::Unit::TestCase
   ensure
     Object.send(:remove_const, "Rails")
   end
-end
-\ No newline at end of file
+end