Remove tripleo-ci-centos-7-3nodes-multinode job

This was removed from tht https://review.openstack.org/#/c/608311
so lets also remove the job definition

Change-Id: I83c91e22b91fce7232e1b9124b9d969e099b314a
Depends-On: I9c2cda2bf330c1ec93e756708e9d927595dadfd8

scripts/tripleo-jobs-gerrit.py

@@ -17,7 +17,6 @@ DEFAULT_JOB_NAMES = [
     'tripleo-ci-centos-7-scenario004-multinode-oooq-container',
     'tripleo-ci-centos-7-scenario007-multinode-oooq-container',
     'tripleo-ci-centos-7-undercloud-containers,'
-    'tripleo-ci-centos-7-3nodes-multinode',
     'tripleo-ci-centos-7-undercloud-upgrades',
 ]
 

zuul.d/multinode-jobs.yaml

@@ -90,16 +90,6 @@
         - tripleo-ci-centos-7-containers-multinode-queens
         - tripleo-ci-centos-7-containers-multinode-pike
 
-- job:
-    name: tripleo-ci-centos-7-3nodes-multinode
-    parent: tripleo-ci-base-multinode
-    voting: false
-    nodeset: three-centos-7-nodes
-    branches: ^(?!stable/(newton|ocata|pike)).*$
-    vars:
-      nodes: 2ctlr
-      featureset: '032'
-
 - job:
     name: tripleo-ci-centos-7-containers-multinode
     parent: tripleo-ci-base-multinode