Revert "Make python3 rally job voting in Neutron"

This reverts commit 9915e4bfe6.

This is failing due to other projects having python3 failures and is
blocking the neutron gate.

Closes-Bug: #1667579
Change-Id: I59f1bf5e34cc9ce777746907bd614d86682462be

jenkins/jobs/projects.yaml

@@ -7513,7 +7513,7 @@
           telemetry: '0'
       - gate-rally-dsvm-py35-neutron-{name}-{node}{suffix}:
           node: ubuntu-xenial
-          suffix: ''
+          suffix: '-nv'
           telemetry: '0'
       - '{pipeline}-grenade-dsvm-neutron-multinode-{node-release}{suffix}':
           pipeline: gate

zuul/layout.yaml

@@ -1994,10 +1994,6 @@ jobs:
   - name: ^gate-tempest-dsvm-neutron-pg-full-ubuntu-(trusty|xenial)
     voting: false
 
-  # non py35 rally xenial job should only run on newton. master is py35
-  - name: ^gate-rally-dsvm-neutron-neutron-ubuntu-xenial
-    branch: ^stable/newton
-
   # scenario tests for neutron-dynamic-routing can be run on ocata and later
   - name: ^gate-neutron-dynamic-routing-dsvm-tempest-scenario.*$
     branch: ^(?!stable/newton).*$
@@ -12255,7 +12251,7 @@ projects:
       - gate-neutron-dsvm-fullstack-ubuntu-xenial
       - gate-rally-dsvm-neutron-neutron-ubuntu-trusty
       - gate-rally-dsvm-neutron-neutron-ubuntu-xenial
-      - gate-rally-dsvm-py35-neutron-neutron-ubuntu-xenial
+      - gate-rally-dsvm-py35-neutron-neutron-ubuntu-xenial-nv
       - gate-tempest-dsvm-neutron-dvr-ubuntu-trusty
       - gate-tempest-dsvm-neutron-dvr-ubuntu-xenial
       - gate-tempest-dsvm-neutron-identity-v3-only-full-ubuntu-xenial-nv