Revert "Don't display singleton class in Method#inspect unless method defined there"

[Backport #16771]

This reverts commit 0d24fb774d84d4a99454ce10fd343da00049a588.

1 files changed, 0 insertions, 8 deletions

diff --git a/test/ruby/test_method.rb b/test/ruby/test_method.rb
index 6ad9620a00..bb506f1258 100644
--- a/test/ruby/test_method.rb
+++ b/test/ruby/test_method.rb
@@ -459,14 +459,6 @@ class TestMethod < Test::Unit::TestCase
     c3.class_eval { alias bar foo }
     m3 = c3.new.method(:bar)
     assert_equal("#<Method: #{c3.inspect}(#{c.inspect})#bar(foo)() #{__FILE__}:#{line_no}>", m3.inspect, bug7806)
-
-    bug15608 = '[ruby-core:91570] [Bug #15608]'
-    c4 = Class.new(c)
-    c4.class_eval { alias bar foo }
-    o = c4.new
-    o.singleton_class
-    m4 = o.method(:bar)
-    assert_equal("#<Method: #{c4.inspect}(#{c.inspect})#bar(foo)() #{__FILE__}:#{line_no}>", m4.inspect, bug15608)
   end
 
   def test_callee_top_level