Remove tripleo-based jobs ahead of Wallaby EOL

Wallaby branches on TripleO based repos
will be going EOL soon.
This review removes the TripleO based jobs
to avoid possible future failures.

Change-Id: Iadc9161fc1303485c2b3980fdc1b992991804c9c

.zuul.yaml

@@ -4,46 +4,3 @@
       - puppet-openstack-module-unit-jobs
       - puppet-openstack-litmus-jobs
       - release-notes-jobs-python3
-    check:
-      jobs:
-        - puppet-octavia-tripleo-standalone
-
-- nodeset:
-    name: puppet-octavia-tripleo-single-node-centos-9-stream-nested-virt
-    nodes:
-      - name: primary
-        label: nested-virt-centos-9-stream
-    groups:
-      - name: switch
-        nodes:
-          - primary
-      - name: peers
-        nodes: []
-
-- job:
-    name: puppet-octavia-tripleo-standalone
-    parent: tripleo-puppet-ci-centos-9-standalone
-    nodeset: puppet-octavia-tripleo-single-node-centos-9-stream-nested-virt
-    description: |
-      TripleO standalone Job running Octavia specific Tempest tests.
-    voting: false
-    vars:
-      build_container_images: true
-      tags:
-        - build
-        - standalone
-        - octavia
-        - nested-virt
-      featureset_override:
-        run_tempest: false
-        tempest_test_whitelist:
-          - 'octavia_tempest_plugin.tests.scenario.v2.test_healthmonitor'
-          - 'octavia_tempest_plugin.tests.scenario.v2.test_listener'
-          - 'octavia_tempest_plugin.tests.scenario.v2.test_member'
-          - 'octavia_tempest_plugin.tests.scenario.v2.test_load_balancer'
-        use_os_tempest: true
-        validate_services: false
-        standalone_environment_files:
-          - 'environments/low-memory-usage.yaml'
-          - 'ci/environments/scenario013-standalone.yaml'
-          - 'ci/environments/octavia-kvm.yaml'