Clean up removed services from devstack options

The following services were removed some time ago.
 - nova-objectstore
 - nova-consoleauth
 - glance-registry

Change-Id: I5d3435c9fa65fdc1f43d9e0ddef1378c0e08acaf
diff --git a/zuul.d/jobs.yaml b/zuul.d/jobs.yaml
index 303dc66..2bacb6e 100644
--- a/zuul.d/jobs.yaml
+++ b/zuul.d/jobs.yaml
@@ -395,16 +395,13 @@
           barbican: false
           dstat: true
           g-api: true
-          g-reg: true
           key: true
           memory_tracker: false
           mysql: true
           n-api: true
           n-api-meta: true
-          n-cauth: true
           n-cond: true
           n-cpu: true
-          n-obj: true
           n-sch: true
           neutron-qos: true
           octavia: true