Drop 2023.1 release is unmaintained

The release is unmaintained and don't have stable branch

Change-Id: I182a944c6634a381767b64e40e5aaad3be7aa748

.zuul.d/2023.1-ubuntu_focal.yaml

@@ -1,41 +0,0 @@
-- job:
-    name: loci-build-2023-1-ubuntu_focal
-    timeout: 10800
-    dependencies:
-      - name: loci-buildset-registry
-    pre-run:
-      - playbooks/inject-keys.yaml
-      - playbooks/pre-build.yaml
-    run:
-      - playbooks/build.yaml
-    vars: &vars
-      vars_files:
-        - vars_2023.1.yaml
-
-- job:
-    name: loci-upload-2023-1-ubuntu_focal
-    timeout: 10800
-    dependencies:
-      - name: loci-buildset-registry
-    pre-run:
-      - playbooks/inject-keys.yaml
-      - playbooks/pre-build.yaml
-    run:
-      - playbooks/build.yaml
-    post-run:
-      - playbooks/upload.yaml
-    vars: *vars
-    secrets:
-      name: docker_credentials
-      secret: loci_docker_login
-
-- job:
-    name: loci-promote-2023-1-ubuntu_focal
-    run:
-      - playbooks/promote.yaml
-    vars: *vars
-    secrets:
-      name: docker_credentials
-      secret: loci_docker_login
-    nodeset:
-      nodes: []

.zuul.d/project.yaml

@@ -2,20 +2,17 @@
     check:
       jobs:
         - loci-buildset-registry
-        - loci-build-2023-1-ubuntu_focal
         - loci-build-2024-1-ubuntu_jammy
         - loci-build-2024-2-ubuntu_jammy
         - loci-build-master-ubuntu_jammy
     gate:
       jobs:
         - loci-buildset-registry
-        - loci-upload-2023-1-ubuntu_focal
         - loci-upload-2024-1-ubuntu_jammy
         - loci-upload-2024-2-ubuntu_jammy
         - loci-upload-master-ubuntu_jammy
     promote:
       jobs:
-        - loci-promote-2023-1-ubuntu_focal
         - loci-promote-2024-1-ubuntu_jammy
         - loci-promote-2024-2-ubuntu_jammy
         - loci-promote-master-ubuntu_jammy

playbooks/vars_2023.1.yaml

@@ -1,22 +0,0 @@
-image_tag: "2023.1-ubunu_focal"
-distro_image: "ubuntu:focal"
-openstack_release: "stable/2023.1"
-ceph_repo: "deb https://download.ceph.com/debian-reef/ focal main"
-openstack_images:
-  - "{{ barbican_image }}"
-  - "{{ cinder_image }}"
-  - "{{ cyborg_image }}"
-  - "{{ designate_image }}"
-  - "{{ glance_image }}"
-  - "{{ heat_image }}"
-  - "{{ horizon_image }}"
-  - "{{ ironic_image }}"
-  - "{{ keystone_image }}"
-  - "{{ manila_image }}"
-  - "{{ monasca_api_image }}"
-  - "{{ neutron_image }}"
-  - "{{ nova_image }}"
-  - "{{ octavia_image }}"
-  - "{{ placement_image }}"
-  - "{{ tacker_image}}"
-  - "{{ watcher_image }}"