This is a bookmarklet that removes all iframes from the current page. Paste its code into a bookmark URL field. Click the bookmark to remove all iframes. Once started, it also removes newly spawned iframes every 100ms.

iframe-killa.js

javascript:void(function(){setInterval(function(){document.querySelectorAll('iframe').forEach(function(element){console.log('Iframe Killa - Removing Element:', element);element.parentNode.removeChild(element)})},100)}());