So what I did was:
1. You need Root
2. Install an alternative launcher
3. Using Titanium backup freeze KFTV Launcher and OOBE
4. Go online to amazon.com and deregister the device from your account
5. No more nagging message telling me to log in using an amazon account.
Hope this helps!!!
Because this will kill your connection to amazon please keep in mind that any amazon app downloaded will stop working.