remove unused method ClientConfigWithAPIEndpoint

[guettli]

/kind bug

This method is not used. We should remove it:

// ClientConfigWithAPIEndpoint returns a client config.
func (s *ClusterScope) ClientConfigWithAPIEndpoint(ctx context.Context, endpoint clusterv1.APIEndpoint) (clientcmd.ClientConfig, error) {
	c, err := s.ClientConfig(ctx)
	if err != nil {
		return nil, err
	}

	raw, err := c.RawConfig()
	if err != nil {
		return nil, fmt.Errorf("error retrieving rawConfig from clientConfig: %w", err)
	}
	// update cluster endpoint in config
	for key := range raw.Clusters {
		raw.Clusters[key].Server = fmt.Sprintf("https://%s:%d", endpoint.Host, endpoint.Port)
	}

	return clientcmd.NewDefaultClientConfig(raw, &clientcmd.ConfigOverrides{}), nil
}

[Deepam02]

/assign