How to remove CSS Class with Tampermonkey?

Question

I am very new to CSS and javascript, so take it easy on me.

I am trying to remove the class disable-stream from each of the div elements under the div class

Answer 1

var divs =document.getElementsByClassName("stream-notifications");

divs=Array.from(divs);

divs.forEach(function(div){
  div.classList.remove('disable-stream');
 });