Fixed minitest dependency bug by removing env PARALLEL checks (no clue why that was there). Exactly the same minitest code tho.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40628 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-05-10

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40629 b2dd03c8-39d4-4d8f-98ff-823fe69b080e