Remove useless tag controllers and models

vendor/built_in_modules/faq/app/controllers/panel/faq/back_end/tags_controller.rb

@@ -1,8 +0,0 @@
-class Panel::Faq::BackEnd::TagsController < Admin::TagsController
-  
-  def initialize
-    super
-    @app_title = 'faq'
-  end
-  
-end

vendor/built_in_modules/faq/app/models/faq_tag.rb

@@ -1,10 +0,0 @@
-class FaqTag < Tag
-  
-  has_and_belongs_to_many :qas
-  
-  
-  def get_visible_links(sort = :title)
-	  self.qas.where(:is_hidden => false).desc(:is_top, sort)
-  end
-
-end