* test/-ext-/test_printf.rb, test/rss/test_parser.rb,
  test/ruby/test_array.rb, test/ruby/test_hash.rb,
  test/ruby/test_m17n.rb, test/ruby/test_marshal.rb,
  test/ruby/test_object.rb, test/ruby/test_string.rb: don't use
  untrusted?, untrust, and trust to avoid warnings in case $VERBOSE is
  true.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41271 b2dd03c8-39d4-4d8f-98ff-823fe69b080e