Hello, 
I was also under the impression that the John S theme came with a cookies notice and I need that for the site I'm using it to build. Is there no way to incorporate a cookies notice for the next update to the theme? Or maybe there's a free plug-in you'd recommend works well with the theme and provides a cookies notice? 
I would highly recommend removing it from your demo because it's false advertising otherwise. People expect it to be included and then it's not. 
Thanks.