It's easy using an adblocker. I use Adblock Plus.

Simply click on the icon and click "Block element" in the menu.

The little popup from the extension should look like this above. Click anywhere on the page.

When the next window pops up, get rid of all of the stuff that's already there and type this: "https://epicmafia.com/javascripts/snowstorm.js" (without the quotes). Hit "Add".

Refresh EM and you should be all good!