Revert r44778 #9375

It breaks test-all if all tests are in a single process


git-svn-id: svn+ssh://svn.ruby-lang.org/ruby/branches/ruby_2_1@44786 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2014-02-01

git-svn-id: svn+ssh://svn.ruby-lang.org/ruby/branches/ruby_2_1@44787 b2dd03c8-39d4-4d8f-98ff-823fe69b080e