iCloud Verification has too many devices
Occasionally I need to verify my identity to iCloud. The list of devices includes my old iPad (no longer own), my iPad Air 2, plus four instances of my iPhone 5s (I am on my third replacement, fourth total). How do I tell iCloud to only list my to iOS devices (iPad Air 2 and latest iPhone 5s)?
iMac, OS X Yosemite (10.10)