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/stock_article.rb

@@ -41,29 +41,3 @@ class StockArticle < Article
   end
 end
 
-# == Schema Information
-#
-# Table name: articles
-#
-#  id                  :integer(4)      not null, primary key
-#  name                :string(255)     default(""), not null
-#  supplier_id         :integer(4)      default(0), not null
-#  article_category_id :integer(4)      default(0), not null
-#  unit                :string(255)     default(""), not null
-#  note                :string(255)
-#  availability        :boolean(1)      default(TRUE), not null
-#  manufacturer        :string(255)
-#  origin              :string(255)
-#  shared_updated_on   :datetime
-#  price               :decimal(8, 2)
-#  tax                 :float
-#  deposit             :decimal(8, 2)   default(0.0)
-#  unit_quantity       :integer(4)      default(1), not null
-#  order_number        :string(255)
-#  created_at          :datetime
-#  updated_at          :datetime
-#  deleted_at          :datetime
-#  type                :string(255)
-#  quantity            :integer(4)      default(0)
-#
-