Remove unnecessary class Test::Unit::TestCase from the test helper
Remove unnecessary class Test::Unit::TestCase from the test helper

I'm not sure what the purpose of this was meant to be.

thinkthroughmath/clever-ruby,TomK32/clever-ruby,samfishman/clever-ruby,mchavarriagam/clever-ruby,Clever/clever-ruby,haikulearning/clever-ruby,Clever/clever-ruby