Remove heat-templates-buildimages job

The image built by this job is no longer used and is known to be
broken.

Also this job may have just started failing, which may be the reason
heat-templates changes are wedged in Submitted, Merge Pending:
https://review.openstack.org/#/q/project:openstack/heat-templates+status:submitted

Change-Id: I64cff397373e0934ed22e490189365ace5638591

jenkins/jobs/heat.yaml

@@ -31,29 +31,6 @@
       - devstack-logs
       - console-log
 
-- job:
-    name: 'heat-templates-buildimages'
-    node: ubuntu-trusty
-
-    builders:
-      - link-logs
-      - net-info
-      - gerrit-git-prep
-      - install-distro-packages
-      - diskimage-builder-install
-      - shell: |
-          hot/software-config/test-image/build-heat-test-image.sh
-
-    publishers:
-      - scp:
-          site: 'tarballs.openstack.org'
-          files:
-            - source: 'fedora-heat-test-image.qcow2'
-              target: 'tarballs/heat-test-image'
-              keep-hierarchy: false
-              copy-after-failure: false
-      - console-log
-
 - job-template:
     name: '{pipeline}-heat-dsvm-functional-{engine}-{datastore}-{lbaasversion}{special}{job-suffix}'
     node: '{node}'

zuul/layout.yaml

@@ -9342,8 +9342,6 @@ projects:
       - gate-heat-templates-python27-ubuntu-trusty
       - gate-heat-templates-pep8-ubuntu-xenial
       - gate-heat-templates-python27-ubuntu-xenial
-    post:
-      - heat-templates-buildimages
 
   - name: openstack/heat-translator
     template: