Delete duplicate entry.

Author: Yhg1s

peps/pep-0719.rst

@@ -66,7 +66,6 @@ Expected:
 - 3.13.7: Tuesday, 2025-12-02
 - 3.13.8: Tuesday, 2026-02-03
 - 3.13.9: Tuesday, 2026-04-07
-- 3.13.9: Tuesday, 2026-04-07
 - 3.13.10: Tuesday, 2026-06-09
 - 3.13.11: Tuesday, 2026-08-04
 - 3.13.12: Tuesday, 2026-10-06