remove test for recursive hash key. [ruby-core:22921]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24157 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
remove test for recursive hash key. [ruby-core:22921]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24157 b2dd03c8-39d4-4d8f-98ff-823fe69b080e