Stop doing afs prep in docs build jobs

We don't publish docs to AFS in the build jobs, so the step is
unnecessary and also prevents infra projects from using the normal docs
build job.

Doing this means we're not reorganizing the docs, so we can remove
latest/ from the success-url - and we can also remove the
branch-specific variants.

Remove mention of docs build jobs from the
publish-openstack-sphinx-docs-infra project-template. The build jobs are
in openstack-python-jobs.

A followup will come to change that - but for now let's align these.

Change-Id: I123b4d9f3514542d8ece8e9681c5265dc54961dc

playbooks/sphinx-docs/post-infra.yaml

@@ -1,3 +0,0 @@
-- hosts: all
-  roles:
-    - prepare-infra-docs-for-afs

playbooks/sphinx-docs/post.yaml

@@ -1,3 +0,0 @@
-- hosts: all
-  roles:
-    - prepare-docs-for-afs

zuul.d/jobs.yaml

@@ -167,8 +167,7 @@
       can be examined if desired, and also validates htaccess files
       using the whereto tool.
     run: playbooks/sphinx-docs/run
-    post-run: playbooks/sphinx-docs/post
-    success-url: html/latest/
+    success-url: html/
     required-projects:
       - name: openstack/requirements
     roles:
@@ -178,26 +177,6 @@
       tox_envlist: venv
       tox_extra_args: -vv python setup.py build_sphinx
 
-- job:
-    name: build-openstack-sphinx-docs
-    branches: stable/queens
-    success-url: html/queens/
-
-- job:
-    name: build-openstack-sphinx-docs
-    branches: stable/pike
-    success-url: html/pike/
-
-- job:
-    name: build-openstack-sphinx-docs
-    branches: stable/ocata
-    success-url: html/ocata/
-
-- job:
-    name: build-openstack-sphinx-docs
-    branches: stable/newton
-    success-url: html/newton/
-
 - job:
     name: build-openstack-infra-sphinx-docs
     parent: tox-docs
@@ -207,7 +186,6 @@
       collects the results into the log directory so that they can be
       examined in their published form after a successful build.
     run: playbooks/sphinx-docs/run
-    post-run: playbooks/sphinx-docs/post-infra
     success-url: html/
     roles:
       - zuul: openstack-infra/zuul-jobs

zuul.d/project-templates.yaml

@@ -8,12 +8,6 @@
 
 - project-template:
     name: publish-openstack-sphinx-docs-infra
-    check:
-      jobs:
-        - build-openstack-infra-sphinx-docs
-    gate:
-      jobs:
-        - build-openstack-infra-sphinx-docs
     post:
       jobs:
         - publish-openstack-sphinx-docs-infra