Remove stable/2023.1 job from master gate

stable/2023.1 is planned to be in unmaintained state[1]
and with python 3.8 drop from Tempest[2], we have to pin the
Tempest for stable/2023.1 testing[3]. This means Tempest and
its plugin master does not need to support stable/2023.1.

With that we can remove the stable/2023.1 jobs from tempest
plugin master jobs.

[1] https://lists.openstack.org/archives/list/openstack-discuss@lists.openstack.org/message/UDQAC7SR5JAQJE5WBAG54A2MTBVBTJ44/
[2] https://review.opendev.org/c/openstack/tempest/+/933398
[3] https://review.opendev.org/c/openstack/devstack/+/933704

Change-Id: I906357495c50173c578cb54dc60fb4bc98620a4b

zuul.d/manila-tempest-stable-jobs.yaml

@@ -107,24 +107,6 @@
         MANILA_SETUP_IPV6: false
         NEUTRON_CREATE_INITIAL_NETWORKS: true
 
-- job:
-    name: manila-tempest-plugin-lvm-2023.1
-    parent: manila-tempest-plugin-lvm-base
-    override-checkout: stable/2023.1
-    vars:
-      # TODO(gouthamr): some tests are disabled due to bugs
-      # IPv6 Tests: https://bugs.launchpad.net/manila/+bug/1998489
-      # drop these overrides once we address that bug.
-      tempest_exclude_regex: '(^manila_tempest_tests.tests.scenario.*IPv6.*)'
-      devstack_localrc:
-        MANILA_SETUP_IPV6: false
-        NEUTRON_CREATE_INITIAL_NETWORKS: true
-        # NOTE(carloss): Pinning manila service image to a Focal version,
-        # since on Zed we moved to Ubuntu Jammy (22), and it requires more
-        # VM resources.
-        MANILA_SERVICE_IMAGE_URL: https://tarballs.opendev.org/openstack/manila-image-elements/images/manila-service-image-1.3.0-76-ga216835.qcow2
-        MANILA_SERVICE_IMAGE_NAME: manila-service-image-1.3.0-76-ga216835
-
 - project-template:
     name: manila-tempest-plugin-jobs-using-service-image-stable
     description: |

zuul.d/project.yaml

@@ -11,7 +11,6 @@
         - manila-tempest-plugin-lvm-2024.2
         - manila-tempest-plugin-lvm-2024.1
         - manila-tempest-plugin-lvm-2023.2
-        - manila-tempest-plugin-lvm-2023.1
         - manila-tempest-plugin-dummy-no-dhss-rbac
         - manila-tempest-plugin-container:
             voting: false