Retire puppet-stackalytics (part 1)

The repo openstack-infra/puppet-stackalytics has been created with the
intent to host stackalytics by the OpenStack Infra team - and this did not
happen. We will therefore retire the repository.

Announcement was sent:
http://lists.openstack.org/pipermail/openstack-discuss/2019-January/001875.html

Change-Id: Ie65393704db84382cd5d9594bb97dac8285b7b94

zuul.d/projects.yaml

@@ -1403,14 +1403,7 @@
 - project:
     name: openstack-infra/puppet-stackalytics
     templates:
-      - infra-puppet-check-jobs
-      - infra-puppet-apply-jobs
-      - puppet-beaker-jobs-centos-7-infra
-      - puppet-beaker-jobs-xenial-infra
-    check:
-      queue: system-config
-    gate:
-      queue: system-config
+      - noop-jobs
 
 - project:
     name: openstack-infra/puppet-statusbot