CI: drop temporary vars for Bookworm switch

Change-Id: Ic34a150282b0e77282c31ad03e6a9839b6636cc1

.zuul.d/debian.yaml

@@ -4,29 +4,18 @@
       jobs:
         - kolla-build-debian
         - kolla-build-debian-podman
-        - kolla-ansible-debian:
+        - kolla-ansible-debian
-            vars:
+        - kolla-ansible-debian-upgrade
-              kolla_python_version: "3.11"
-        - kolla-ansible-debian-upgrade:
-            vars:
-              kolla_python_version: "3.11"
     check-arm64:
       jobs:
         - kolla-build-debian-aarch64
-        - kolla-ansible-debian-aarch64:
+        - kolla-ansible-debian-aarch64
-            vars:
-              kolla_python_version: "3.11"
-            voting: false
     gate:
       jobs:
         - kolla-build-debian
         - kolla-build-debian-podman
-        - kolla-ansible-debian:
+        - kolla-ansible-debian
-            vars:
+        - kolla-ansible-debian-upgrade
-              kolla_python_version: "3.11"
-        - kolla-ansible-debian-upgrade:
-            vars:
-              kolla_python_version: "3.11"
     periodic:
       jobs:
         - kolla-publish-debian-quay