Deregistering a tablet means that you are removing the device from your account. This can be done in the Settings app. You will need to select the “Account” option, then choose “iTunes & App Store.” You can then select “View Apple ID,” which will take you to your account information. From there, navigate to the Devices tab and find the device you wish to deregister.
To remove your Google account from your Kindle Fire HD 8, you need to go to Settings. From there, tap Account and then look for the option to remove your Google account. Tap it and proceed with the necessary steps. You’ll have to log back in with a different account or restore a previous backup. If you do not want a Google account on your Kindle Fire, this is an easy way to delete it from your device.