Remove publish-openstack-manuals-developer-lang

We don't need this job anymore since content is moved to
openstack-manuals, remove it.

Remove also the now unused translation job template from api-site.

Depends-On: https://review.opendev.org/671115
Depends-On: https://review.opendev.org/671124
Change-Id: I11fc113208cb38e76ef1603bc5a71de494c5b70f

zuul.d/jobs.yaml

@@ -738,22 +738,6 @@
       - secret: afsdocs_secret
         name: afs
 
-- job:
-    name: publish-openstack-manuals-developer-lang
-    parent: publish-openstack-manuals-base
-    post-run:
-      - playbooks/publish/manuals.yaml
-      - playbooks/publish/openstack-afs.yaml
-    final: true
-    allowed-projects:
-      - openstack/api-site
-    vars:
-      tox_envlist: publishlang
-      afs_subpath: ""
-    secrets:
-      - secret: afsdeveloper_secret
-        name: afs
-
 - job:
     name: publish-api-tox-docs-base
     description: |

zuul.d/projects.yaml

@@ -1437,11 +1437,6 @@
       - install-guide-jobs
       - publish-to-pypi
 
-- project:
-    name: openstack/api-site
-    templates:
-      - translation-jobs-master-only
-
 - project:
     name: openstack/arch-wg
     check: