test_argf.rb: duplicated test
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38581 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_argf.rb: duplicated test
whose content is test_bytes actually.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38581 b2dd03c8-39d4-4d8f-98ff-823fe69b080e