hideAds.js

var getAdContainer = function(element){ 
    if(!element || element.className.match(/\b_4ikz\b/)){
        return element
    } 
    return getAdContainer(element.parentNode)
}

var hideAds = function() {
    var ads = document.getElementsByClassName('uiStreamSponsoredLink');
    for(var i = 0; i < ads.length; i++){
        var adContainer = getAdContainer(ads[i]);
        if(adContainer) {
            adContainer.style.display = 'none';
        }
    }
}

hideAds();

window.onscroll = function(){
    hideAds();
}