Tweaks

1. Include Amazon Smile:

   // @include     http*://smile.amazon.com/*
   

2. I rewrote without deprecated DOM Mutation Events and without jQuery:

   new MutationObserver(function(mutationList, observer) {
   document.querySelectorAll('[data-component-type="sp-sponsored-r###lt"]').forEach(function(element) {
   var parent = element.closest('[data-asin]');
   if (parent) parent.remove();
   });
   }).observe(document.body, {childList: true, subtree: true});
   

Sorry for the late reply, I never received an email about this. I've added Smile and updated the script. Thank you very much for your contribution!