Removed dependency with monkey-patched rubytree.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@8214 e93f8b46-1217-0410-a6f0-8f06a7374b81

config/environment.rb

@@ -54,7 +54,6 @@ Rails::Initializer.run do |config|
   # It will automatically turn deliveries on
   config.action_mailer.perform_deliveries = false
 
-  config.gem 'rubytree', :lib => 'tree'
   config.gem 'coderay', :version => '~>1.0.0'
 
   # Load any local configuration that is kept out of source control