How do I remove an item from stock location?

If you want to delete an item from stock location, swipe left on the item as shown below and select "delete icon" from the side menu.  You will see a popup dialog like shown below. There are a couple of options on the dialog, one is to just remove the item from the stock location and the other is to delete and make it not automatically return back to stock location after it's checked out from a shopping list.