* test/fiddle/test_function.rb: remove unused variables.
* test/fileutils/test_fileutils.rb: ditto.
* test/io/console/test_io_console.rb: ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45164 b2dd03c8-39d4-4d8f-98ff-823fe69b080e