Delegate a Note's Mentionable methods to its noteable object

Former-commit-id: 84dab62c

app/models/note.rb

@@ -39,6 +39,7 @@ class Note < ActiveRecord::Base
   has_many :todos, dependent: :destroy
+  delegate :gfm_reference, :local_reference, to: :noteable
   delegate :name, to: :project, prefix: true
   delegate :name, :email, to: :author, prefix: true
@@ -313,16 +314,6 @@ class Note < ActiveRecord::Base
     nil
   end
-  # Mentionable override.
-  def gfm_reference(from_project = nil)
-    noteable.gfm_reference(from_project)
-  end
-
-  # Mentionable override.
-  def local_reference
-    noteable
-  end
-
   def noteable_type_name
     noteable_type.downcase if noteable_type.present?
   end