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: Ic31a2e56f41dfc4619a805dae206bb1b603f104a
diff --git a/.zuul.yaml b/.zuul.yaml
index af28bf1..f5e6630 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -90,12 +90,6 @@
               ceilometer_polling_interval: 15
 
 - job:
-    name: telemetry-dsvm-integration-2023-1
-    parent: telemetry-tempest-base
-    override-checkout: stable/2023.1
-    vars: *no_prometheus_vars
-
-- job:
     name: telemetry-dsvm-integration
     parent: telemetry-tempest-base
     branches:
@@ -201,7 +195,6 @@
     check:
       jobs:
         - telemetry-dsvm-integration
-        - telemetry-dsvm-integration-2023-1
         - telemetry-dsvm-integration-2023-2
         - telemetry-dsvm-integration-2024-1
         - telemetry-dsvm-integration-2024-2