api/maintenance.go
func (a *API) DeleteMaintenanceWindow(cfg *Maintenance) (bool, error) {
	if cfg == nil {
		return false, fmt.Errorf("Invalid maintenance window config [nil]")
	}
	return a.DeleteMaintenanceWindowByCID(CIDType(&cfg.CID))
}
func (a *API) DeleteMaintenanceWindow(cfg *Maintenance) (bool, error) {
	if cfg == nil {
		return false, fmt.Errorf("Invalid maintenance window config [nil]")
	}
	return a.DeleteMaintenanceWindowByCID(CIDType(&cfg.CID))
}
// DeleteMaintenanceWindow deletes passed maintenance [window].