lib/neutron: Remove remaining references to Q_ variables
lib/neutron: Remove remaining references to Q_ variables

Q_ variables belong to neutron-legacy.

These are True by default in neutron.
Remove them in favor of post-config meta section.

Change-Id: If691a79b09003f85a07c9f33e0379a2b21e48141

noironetworks/devstack,nawawi/openstack,openstack-dev/devstack,dtroyer/devstack,noironetworks/devstack,richliu/devstack,openstack-dev/devstack,richliu/devstack,bswartz/devstack,group-policy/devstack,nawawi/openstack,dtroyer/devstack,bswartz/devstack,group-policy/devstack