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/article_price.rb

@@ -31,16 +31,3 @@ class ArticlePrice < ActiveRecord::Base
   end
 end
 
-# == Schema Information
-#
-# Table name: article_prices
-#
-#  id            :integer(4)      not null, primary key
-#  article_id    :integer(4)
-#  price         :decimal(8, 2)   default(0.0), not null
-#  tax           :decimal(8, 2)   default(0.0), not null
-#  deposit       :decimal(8, 2)   default(0.0), not null
-#  unit_quantity :integer(4)
-#  created_at    :datetime
-#
-