Tap edit then a delete button
Or swipe left over a row and tap delete
Or is this not working for you? If so it's not clear what your issue is exactly
I read this so the credit if it works does not go to me. Edit each of your shortcut entries with some letters like cccabcd in place of just ccc. Let this sit for a few days until it's copied to all of your devices. Once it has delete each entry and again give it a few days to propagate. Do all of this on just one device and wait until the updates make it to your other devices.Guess my hope now rests on iOS 10 next year.
I read this so the credit if it works does not go to me. Edit each of your shortcut entries with some letters like cccabcd in place of just ccc. Let this sit for a few days until it's copied to all of your devices. Once it has delete each entry and again give it a few days to propagate. Do all of this on just one device and wait until the updates make it to your other devices.