zuul: Remove osc-upload-image, osc-promote-image jobs

We are no longer going to publish these images to Dockerhub, given
the recent changes to quotas there coupled with the fact that no one
appears to be using them [1]. The osc-build-image job is retained to
ensure our Dockerfile keeps working.

[1] https://lists.openstack.org/archives/list/openstack-discuss@lists.openstack.org/thread/BE7PPQL4DGNDZ2SIMUVSK67I5NF3TFCX/

Change-Id: I9d2ca8f90b8244a09832da673491312095520968
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>
(cherry picked from commit e4d621d24f)

.zuul.yaml

@@ -137,22 +137,6 @@
       tox_envlist: functional
       tox_install_siblings: true
 
-- secret:
-    name: osc-dockerhub
-    data:
-      username: osclientzuul
-      password: !encrypted/pkcs1-oaep
-        - LbIZjJiVstRVXMpoLQ3+/JcNB6lKVUWJXXo5+Outf+PKAaO7mNnv8XLiFMKnJ6ftopLyu
-          hWbX9rA+NddvplLQkf1xxkh7QBBU8PToLr58quI2SENUclt4tpjxbZfZu451kFSNJvNvR
-          E58cHHpfJZpyRnS2htXmN/Qy24gbV2w7CQxSZD2YhlcrerD8uQ8rWEnlY1wcJEaEGomtS
-          ZTGxsdK2TsZC2cd4b7TG7+xbl2i+hjADzwSQAgUzlLlwuG71667+IWk4SOZ7OycJTv9NN
-          ZTak8+CGfiMKdmsxZ1Z8uD7DC+RIklDjMWyly6zuhWzfhOmsmU0CesR50moodRUvbK79p
-          NZM8u0hBex5cl2EpUEwJL/FSPJXUhDMPoMoTZT/SAuXf25R9eZ9JGrKsIAlmVhpl8ifoE
-          8TpPyvIHGS3YelTQjhqOX0wGb9T4ZauQCcI5Ajzy9NuCTyD9xxme9OX1zz7gMACRnVHvz
-          q7U7Ue90MnmGH6E2SgKjIZhyzy9Efwb7JUvH1Zb3hlrjCjEhwi9MV5FnABTEeXyYwE10s
-          3o/KZg2zvdWkVG6x0dEkjpoQaNuaB7T2Na7Sm421n/z3LCzhiQGuTUjENnL6cMEtuA6Pp
-          BfI5+Qlg7HMwkBXNB73EPfWHzbCR3VNrzGYTy9FvhGud0/cXsuBXgps4WH63ic=
-
 - job:
     name: osc-build-image
     parent: opendev-build-docker-image
@@ -162,38 +146,10 @@
       - python-builder-3.11-bookworm-container-image
       - python-base-3.11-bookworm-container-image
     provides: osc-container-image
-    vars: &osc_image_vars
+    vars:
       docker_images:
         - context: .
-          repository: osclient/python-openstackclient
-
-- job:
-    name: osc-upload-image
-    parent: opendev-upload-docker-image
-    description: Build Docker images and upload to Docker Hub.
-    allowed-projects: openstack/python-openstackclient
-    requires:
-      - python-builder-3.11-bookworm-container-image
-      - python-base-3.11-bookworm-container-image
-    provides: osc-container-image
-    secrets:
-      - name: docker_credentials
-        secret: osc-dockerhub
-        pass-to-parent: true
-    vars: *osc_image_vars
-
-- job:
-    name: osc-promote-image
-    parent: opendev-promote-docker-image
-    allowed-projects: openstack/python-openstackclient
-    description: Promote previously uploaded Docker images.
-    secrets:
-      - name: docker_credentials
-        secret: osc-dockerhub
-        pass-to-parent: true
-    nodeset:
-      nodes: []
-    vars: *osc_image_vars
+          tags: []
 
 - project-template:
     name: osc-tox-unit-tips
@@ -226,8 +182,4 @@
             branches: ^master$
     gate:
       jobs:
-        - osc-upload-image
         - osc-functional-devstack
-    promote:
-      jobs:
-        - osc-promote-image