Remove CentOS Stream 9 job from master

Because Python 3.9 support is being removed, the latest code may no
longer run in CentOS Stream 9. Remove the CentOS jobs until CentOS
Stream 10 jobs are prepared.

Change-Id: I7c954418a01af221686d369921aee89781cd4341
diff --git a/.zuul.yaml b/.zuul.yaml
index 858f1d0..7148c9e 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -264,8 +264,6 @@
         - telemetry-dsvm-integration-2024-1
         - telemetry-dsvm-integration-2024-2
         - telemetry-dsvm-integration-ipv6-only
-        - telemetry-dsvm-integration-centos-9s
-        - telemetry-dsvm-integration-centos-9s-fips
     gate:
       jobs:
         - telemetry-dsvm-integration