Fix for "Can't remove payment method on Google Play"

Here's a fix for those who cannot remove a google payment method AND has/had Project Fi.

1. Go to https://fi.google.com/

2. Go to "Billing"

3. Click "Payment method"

4. Add a new payment method or click the drop-down box on another card and make that the primary.

5. You should now be able to remove the original payment method.