Remove unnecessary ducktype on scoped_issue_board_available

app/models/namespace.rb

@@ -218,10 +218,6 @@ class Namespace < ActiveRecord::Base
     feature_available?(:multiple_issue_boards)
   end
 
-  def scoped_issue_board_available?(user = nil)
-    feature_available?(:scoped_issue_board)
-  end
-
   private
 
   def refresh_access_of_projects_invited_groups

app/models/project.rb

@@ -1535,10 +1535,6 @@ class Project < ActiveRecord::Base
     feature_available?(:multiple_issue_boards, user)
   end
 
-  def scoped_issue_board_available?(user = nil)
-    feature_available?(:scoped_issue_board, user)
-  end
-
   def full_path_was
     File.join(namespace.full_path, previous_changes['path'].first)
   end