models: include all int/bool columns as html data attributes by default.

app/models/pool_archive.rb

@@ -33,14 +33,7 @@ class PoolArchive < ApplicationRecord
     end
   end
 
-  module ApiMethods
-    def html_data_attributes
-      [:pool_id, :updater_id, :version]
-    end
-  end
-
   extend SearchMethods
-  include ApiMethods
 
   def self.sqs_service
     SqsService.new(Danbooru.config.aws_sqs_archives_url)