From the homescreen
Tap your avatar in the upper left of the home screen
Tap “payments”
Select the payment method you would like to remove
Tap “Remove card”
Want to remove multiple payment methods at once? Tap “edit” at the top of the list of payment methods, then tap the “remove” icon next to each payment method you would like to remove.
Heads up! You can not remove your default payment method from the Localhost app.