Here's one that will cost you absolutely nothing, and I'm sure you have one ready at every second! Your thumb!
I've removed several of these Void stickers in my time (from carts, cases, manuals, and even covers) and what I usually do is just peel it off first and then rub the adhesive off with my thumb afterwards. It will start to ball-up and should come off pretty easy! Of course something like Goo Gone etc. will work but I prefer not to use that unless totally necessary (which is not the case here). Especially how minor the left over "Void" is on your cart. I've done carts way worse.