rails/rails — pull request #7738 by grosser (2012-09-23 02:39:56+00:00)
Title: remove unused Mime::Type#verify_request?

Was [used](https://github.com/rails/rails/blob/2-3-stable/actionpack/lib/action_controller/request_forgery_protection.rb#L102) in Rails 2 but [not anymore](https://github.com/rails/rails/blob/master/actionpack/lib/action_controller/metal/request_forgery_protection.rb#L168) -> cleanup