Remove Zaqar from devstack

Zaqar's devstack code has been moved into a plugin in the Zaqar repo.
This patch removes the remaining code from devstack.

Depends-On: Iceefabb6cd528b23075a91e8039b8264eb3f33f5
Change-Id: Ifcf54fa2d4a5bf49b6757b593bb70cdeda8edb2a
diff --git a/lib/tempest b/lib/tempest
index 71181cc..f4d0a6d 100644
--- a/lib/tempest
+++ b/lib/tempest
@@ -550,7 +550,7 @@
     # this tempest service list needs to be all the services that
     # tempest supports, otherwise we can have an erroneous set of
     # defaults (something defaulting true in Tempest, but not listed here).
-    TEMPEST_SERVICES="key,glance,nova,neutron,cinder,swift,heat,ceilometer,horizon,sahara,ironic,trove,zaqar"
+    TEMPEST_SERVICES="key,glance,nova,neutron,cinder,swift,heat,ceilometer,horizon,sahara,ironic,trove"
     for service in ${TEMPEST_SERVICES//,/ }; do
         if is_service_enabled $service ; then
             iniset $TEMPEST_CONFIG service_available $service "True"