remove things again not needed

app/models/mapping.rb

@@ -26,12 +26,4 @@ class Mapping < ActiveRecord::Base
     super(:methods =>[:user_name, :user_image])
   end
 
-  def authorize_to_show(user)
-    if ((self.map.permission == "private" && self.map.user != user) ||
-         (self.mappable.permission == "private" && self.mappable.user != user))
-      return false
-    end
-    return self
-  end
-
 end

app/models/user.rb

@@ -41,10 +41,6 @@ class User < ActiveRecord::Base
   # Validate the attached image is image/jpg, image/png, etc
   validates_attachment_content_type :image, :content_type => /\Aimage\/.*\Z/
 
-  def is_logged_in?
-    true
-  end
-
   # override default as_json
   def as_json(options={})
     { :id => self.id,