None of the iPads have 3D touch so it is not about your tablet being old. I looked it up and the discover-ability on this feature is pretty poor. You click th

None of the iPads have 3D touch so it is not about your tablet being old. I looked it up and the discover-ability on this feature is pretty poor. You click the "downloaded" button to get the option to delete. https://support.apple.com/en-us/HT204343 https://support.apple.com/en-us/HT204343