In any county where the chief judge of the superior court, state court, municipal court, probate court, or magistrate court has provided for probation services for such court through agreement with a private corporation, enterprise, or agency or has established a county or municipal probation system for such court pursuant to Article 6 of this chapter, the provisions of this article relating to supervision services shall not apply to defendants sentenced in any such court.
OCGA § 42-8-30