api/dashboard.go
func (a *API) DeleteDashboard(cfg *Dashboard) (bool, error) {
	if cfg == nil {
		return false, fmt.Errorf("Invalid dashboard config [nil]")
	}
	return a.DeleteDashboardByCID(CIDType(&cfg.CID))
}
func (a *API) DeleteDashboard(cfg *Dashboard) (bool, error) {
	if cfg == nil {
		return false, fmt.Errorf("Invalid dashboard config [nil]")
	}
	return a.DeleteDashboardByCID(CIDType(&cfg.CID))
}
// DeleteDashboard deletes passed dashboard.