Chore: Remove CS9 from molecule test matrix

CentOS 9 molecule tests are currently failing. Temporarily removing
from the test matrix to unblock CI workflows. Focus is on Ubuntu
platforms (22.04 and 24.04) for now.

Change-Id: Ia3e4f30988be645634aa3674a0ae779918a3b26a
Signed-off-by: Anil Belur <[email protected]>

Author: askb

.github/workflows/gerrit-verify.yaml

@@ -111,7 +111,6 @@ jobs:
     strategy:
       matrix:
         distro:
-          - centos9
           - ubuntu2204
           - ubuntu2404
       fail-fast: false