Revert "Do not pass AR objects to Sidekiq"

This reverts commit 32935be9b1.

lib/postzord/dispatcher.rb

@@ -40,11 +40,6 @@ class Postzord::Dispatcher
     if opts[:additional_subscribers].present?
       opts[:additional_subscribers] = [*opts[:additional_subscribers]].map(&:id)
     end
-
-    if opts[:to].present?
-      opts[:to] = [opts[:to]].flatten(1).map {|e| e.respond_to?(:id) ? e.id : e }
-    end
-
     Workers::DeferredDispatch.perform_async(user.id, object.class.to_s, object.id, opts)
   end