docs: update calendar for 23.1.9

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25547>

diff --git a/docs/release-calendar.csv b/docs/release-calendar.csv
index 15bc3c3..50e8fb8 100644 (file)
--- a/docs/release-calendar.csv
+++ b/docs/release-calendar.csv
@@ -1,4 +1,3 @@
-23.1,2023-10-04,23.1.9,Eric Engestrom,Last planned 23.1.x release
 23.2,2023-07-19,23.2.0-rc2,Dylan Baker
 ,2023-07-26,23.2.0-rc3,Dylan Baker
 ,2023-08-02,23.2.0-rc4,Dylan Baker,or 23.2.0 final