Jeremy-
I just had the same problem; I fixed it by adding the following to our custom css file:
@media (max-width: 540px) {
li.bx-clone {
display:none;
}
}This says on a screen size of <= 540px, hide li elements that have the bx-clone class on them, and all of the dupes have this class. I am not sure why they are there, but I don't see any ill effects from hiding them in this way.
Hope this helps.
