removeSigner method
approver names which recovery method authorizes this operation. It is
required by the backend when the wallet holds more than one recovery
method, and must be omitted otherwise.
Implementation
@override
Future<void> removeSigner({
required String walletId,
required String signerLocator,
String? approver,
}) async {
await _service.unregisterSigner(
walletId,
signerLocator,
approver: approver,
);
}