I see we're already working with you on this in live chat, so we can just continue the discussion there.
The only way that View Cart button could appear is if you'd pasted the code for it there yourself. Nothing about our Add to Cart code alone can make a View Cart button also appear. I wonder if maybe you'd somehow copied both sets of code at the same time, like if you'd done a "Select all" on our button-codes screen?
If you can give us a link to the page where you're seeing this, we'd be glad to take a look. Or you might try just deleting all the buttons on your page, save that and reload in your browser to make sure they're gone, then repaste the buttons you want back in.