Here's a quick greasemonkey script I just whipped up that you could start from:
(function(){
'use strict';
var links = document.getElementsByClassName("titlelink");
for(var link of links){
if(link.href.includes("twitter") ){
var owner = link.closest(".athing");
owner.nextSibling.remove();
owner.remove();
}
}
})();
You would need to adapt the "includes()" to match any URL you don't care for.