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

app/models/post_approval.rb

@@ -37,12 +37,4 @@ class PostApproval < ApplicationRecord
     q = q.search_attributes(params, :user, :post)
     q.apply_default_order(params)
   end
-
-  module ApiMethods
-    def html_data_attributes
-      [:post_id, :user_id]
-    end
-  end
-
-  include ApiMethods
 end