Revert "Use a class name compatible with Ruby 1.9.3." It should work with Ruby 1.9.3 if the version of minitest is not old.
Revert "Use a class name compatible with Ruby 1.9.3."
It should work with Ruby 1.9.3 if the version of minitest is not old.

This reverts commit 6a8290b08b575ac8fd2b2dd238e04c9b61dba19f.

cesare/google-drive-ruby,GracepointMinistries/google-drive-ruby,bathwebservices/google-drive-ruby,GracepointMinistries/google-drive-ruby,maxim/google-drive-ruby,obolientsev/google-drive-ruby,julialiff/google-drive-ruby,muran001/google-drive-ruby,landonwilkins/google-drive-ruby,julialiff/google-drive-ruby,landonwilkins/google-drive-ruby,muran001/google-drive-ruby,cesare/google-drive-ruby,maxim/google-drive-ruby,bathwebservices/google-drive-ruby,obolientsev/google-drive-ruby