Code for removing video thumbnail?

Site URL: https://www.roccocampanelli.com/brooklyn-solarworks/2020/4/26/zz1gzkec9405b1tao2ug5q65hzb0hh

Hello!

I am looking for code to remove the following thumbnails across my entire site. I am attaching an image below for reference. 

Thanks! 

Rocco

Add to Home > Design > Custom CSS

div#tinyThumbControls {
    display: none !important;
}