Removed annoate and hirb Gemfiles.

Annotate: Better look in schema.rb, this reference should be always up
to date.

Hirb: To reactivate hirb, look in railscasts:
http://railscasts.com/episodes/48-console-tricks-revised

app/models/delivery.rb

@@ -19,14 +19,3 @@ class Delivery < ActiveRecord::Base
 end
 
 
-# == Schema Information
-#
-# Table name: deliveries
-#
-#  id           :integer(4)      not null, primary key
-#  supplier_id  :integer(4)
-#  delivered_on :date
-#  created_at   :datetime
-#  note         :text
-#
-