To delete an item from your cart, you can do this in 2 ways. The first is to tap on the item in your cart that you would like to delete:
You will see a menu pop up for this item that allows you to change the quantity. Tap on the + or - symbol to change the quantity, then tap Update:
Once you hit Update, you will see that the item no longer appears in your cart:
Another way you can delete items from your cart is to tap on the Trash icon:
This will bring up the Edit Cart menu:
You will be prompted to confirm that you want to delete the item or items from your cart:
Once you tap on Yes, the item or items will be cleared from your cart.