Delete "original" files extension for paperclip

paperclip.rb

# placed in config/initializers/paperclip.rb
module Paperclip
  module InstanceMethods #:nodoc:
    def save_attached_files
      exceptions = [:scan]
      each_attachment do |name, attachment|
        if self.changed.include?("#{name}_updated_at")
          logger.info("[paperclip] Saving attachments.")
          attachment.send(:save)
          unless exceptions.include?(name.to_sym)
            File.delete attachment.path(:original) if File.exists?(attachment.path(:original))
          end
        end
      end
    end
  end
end