Remove preferred thread network after uninstalling OTBR Add-on

The step above did not wipe out my preferred “NEST-PAN-####” network (that appears to have come from my now broken Nest Hub). It did wipe out my Wallet Credit Cards as the warning said :frowning:

I had to promote my newly created thread network to be preferred and then delete the NEST-PAN one.

There was more info here