'Delete the given server certificate
:param certificate_id: the id of the certificate to delete
:type certificate_id: ``str``
:return: whether process is success
:rtype: ``bool``'

def ex_delete_certificate(self, certificate_id):

    params = {'Action': 'DeleteServerCertificate', 'RegionId': self.region, 'ServerCertificateId': certificate_id}
    resp = self.connection.request(self.path, params)
    return resp.success()
