let banner;
function removeBanner() {
    banner = document.elementFromPoint(300, 300);

    if (banner.offsetWidth > 600) {
        banner.parentNode.removeChild(banner);
        console.log('!!! removeBanner ------ removed');
    } else {
        console.log('!!! removeBanner ------ did not removed')
    }

}

const btn = document.createElement('button');
btn.innerHTML = 'remove overlay';
btn.style = 'z-index: 99999999; background: white; color: black;position: fixed; left: 10px; top:10px';
btn.onclick = removeBanner;
document.body.appendChild(btn);