Drop platform job for Ubuntu Jammy

The job stopped working recently, the reason is unclear, but since Jammy
is no longer included as required platform, let's just stop testing it.

Signed-off-by: Dr. Jens Harbott <harbott@osism.tech>
Change-Id: I796eddac96313584f4aa5225a9b9803bb2ad19b5

.zuul.yaml

@@ -897,15 +897,6 @@
     vars:
       configure_swap_size: 4096
 
-- job:
-    name: devstack-platform-ubuntu-jammy
-    parent: tempest-full-py3
-    description: Ubuntu 22.04 LTS (Jammy) platform test
-    nodeset: openstack-single-node-jammy
-    timeout: 9000
-    vars:
-      configure_swap_size: 8192
-
 - job:
     name: devstack-platform-ubuntu-noble-ovn-source
     parent: devstack-platform-ubuntu-noble
@@ -1050,7 +1041,6 @@
         - devstack-platform-rocky-red-quartz
         - devstack-platform-ubuntu-noble-ovn-source
         - devstack-platform-ubuntu-noble-ovs
-        - devstack-platform-ubuntu-jammy
         - devstack-multinode
         - devstack-unit-tests
         - openstack-tox-bashate
@@ -1137,4 +1127,3 @@
         - devstack-platform-rocky-red-quartz
         - devstack-platform-ubuntu-noble-ovn-source
         - devstack-platform-ubuntu-noble-ovs
-        - devstack-platform-ubuntu-jammy

stack.sh

@@ -229,7 +229,7 @@ write_devstack_version
 
 # Warn users who aren't on an explicitly supported distro, but allow them to
 # override check and attempt installation with ``FORCE=yes ./stack``
-SUPPORTED_DISTROS="trixie|bookworm|jammy|noble|rhel9|rhel10"
+SUPPORTED_DISTROS="trixie|bookworm|noble|rhel9|rhel10"
 
 if [[ ! ${DISTRO} =~ $SUPPORTED_DISTROS ]]; then
     echo "WARNING: this script has not been tested on $DISTRO"