see on GitHub

Operations : Server : How to delete client certificate?

You can delete client certificate using DeleteCertificateOperation.

Syntax

public DeleteCertificateOperation(string thumbprint)

Parameters
thumbprint string The certificate thumbprint

Example I

string thumbprint = "a909502dd82ae41433e6f83886b00d4277a32a7b";
store.Maintenance.Server.Send(new DeleteCertificateOperation(thumbprint));