Remove base-ozj job

I do not believe this is used any more.

Story: #2006598
Task: #37735
Change-Id: If8ee6fbbb67c6d1904ba78ce7a9c84fd1e2d7b92

playbooks/base-ozj/README.rst

@@ -1,8 +0,0 @@
-base-ozj
---------
-
-These playbooks are used to select a minimal subset of the roles included in
-the base playbooks.
-
-It will do nothing else than what is explicitly necessary for any job to run
-properly.

playbooks/base-ozj/post-logs.yaml

@@ -1,10 +0,0 @@
-- hosts: localhost
-  roles:
-    - role: add-fileserver
-      fileserver: "{{ site_logs_project_config }}"
-    - role: ara-report
-
-- hosts: "{{ site_logs_project_config.fqdn }}"
-  roles:
-    - role: upload-logs
-      zuul_log_url: "http://logs.openstack.org"

playbooks/base-ozj/post.yaml

@@ -1,11 +0,0 @@
-- hosts: all
-  roles:
-    - fetch-output
-    - merge-output-to-logs
-
-- hosts: all
-  # NOTE(pabelanger): We ignore_errors for the following tasks as not to fail
-  # successful jobs.
-  ignore_errors: yes
-  roles:
-    - remove-build-sshkey

playbooks/base-ozj/pre.yaml

@@ -1,9 +0,0 @@
-- hosts: all
-  roles:
-    - add-build-sshkey
-    - start-zuul-console
-    - log-inventory
-    - role: validate-host
-      # TODO(mordred) When we have site-local variables, these should go there
-      zuul_traceroute_host: opendev.org
-      zuul_image_manifest: /etc/dib-builddate.txt

zuul.d/jobs.yaml

@@ -3,38 +3,6 @@
 # Overrides jobs from:
 #    https://opendev.org/zuul/zuul-jobs
 
-- job:
-    name: base-ozj
-    parent: null
-    abstract: true
-    description: |
-      A subset of what the 'base' job provides: the absolute minimum considered
-      required to run for any one job.
-      It doesn't set up cached git repositories, will not set up mirrors,
-      doesn't validate the node, etc.
-      It is meant to be used, amongst other things, to test roles and
-      playbooks that would otherwise be included by default as part of the
-      'base' job.
-      These tasks, if required, can be included by the dependant jobs
-      themselves on a need basis.
-    pre-run: playbooks/base-ozj/pre.yaml
-    post-run:
-      - playbooks/base-ozj/post.yaml
-      - playbooks/base-ozj/post-logs.yaml
-    roles:
-      - zuul: zuul/zuul-jobs
-    vars:
-      ara_report_type: database
-      ara_report_path: ara-report
-    timeout: 1800
-    post-timeout: 1800
-    nodeset:
-      nodes:
-        - name: ubuntu-xenial
-          label: ubuntu-xenial
-    secrets:
-      - site_logs_project_config
-
 - job:
     name: publish-openstack-artifacts
     description: |