Temporarily revert to the most basic job

Change-Id: I592b7a1970acae8fa6c9b45c9ccbe78da4573220
diff --git a/zuul.d/jobs.yaml b/zuul.d/jobs.yaml
index 22b244e..8ad979e 100644
--- a/zuul.d/jobs.yaml
+++ b/zuul.d/jobs.yaml
@@ -1,25 +1,7 @@
 - job:
     name: base
     parent: null
-    description: |
-      The recommended base job.
-
-      All jobs ultimately inherit from this.  It runs a pre-playbook
-      which copies all of the job's prepared git repos on to all of
-      the nodes in the nodeset.
-
-      It also sets a default timeout value (which may be overidden).
-    pre-run: playbooks/base/pre.yaml
-    post-run:
-      - playbooks/base/post-ssh.yaml
-      - playbooks/base/post-logs.yaml
-    roles:
-      - zuul: zuul/zuul-jobs
-    timeout: 1800
     nodeset:
       nodes:
         - name: ubuntu-focal
           label: ubuntu-focal
-    secrets:
-      - name: s3_config
-        secret: s3-secrets