Click on "Edit cart" on the shopping cart popup - each item in the cart should have a blue x symbol at the end of its line for removing the entry.
Try setting the item count to zero then (at least that option is present in the drop-down on the non-mobile version of the site) ?
Hi j72m79, Thanks for writing in and I'm sorry to hear you're having trouble emptying your cart! Like mkroeker already mentioned, can you try setting your item count on the quantity drop down menu to zero? If that doesn't work, would you be able to visit your cart on a computer and try removing the item from your cart then? Let me know how that works out and we can go from there! All the best,
If you can't get to a PC, I usually try requesting the desktop site (tap the 3 dots on the top right of the browser, then check the checkbox next to Request desktop site)