revert r16881 (#26513, #26524, #26526)

git-svn-id: http://svn.redmine.org/redmine/trunk@16883 e93f8b46-1217-0410-a6f0-8f06a7374b81

config/environments/production.rb

@@ -10,8 +10,6 @@ Rails.application.configure do
   # Rake tasks automatically ignore this option for performance.
   config.eager_load = true
 
-  config.enable_dependency_loading = true
-
   # Full error reports are disabled and caching is turned on.
   config.consider_all_requests_local = false
   config.action_controller.perform_caching = true