Remove ONOS docker image from values file

Change-Id: I11d95e23087bbd636f25bb4cdb1f1a4caee59182
diff --git a/voltha/values.yaml b/voltha/values.yaml
index 3c13bc8..8939b33 100644
--- a/voltha/values.yaml
+++ b/voltha/values.yaml
@@ -73,9 +73,6 @@
   ofagent:
     repository: voltha/voltha-ofagent
     tag: 'latest'
-  onos:
-    repository: voltha/voltha-onos
-    tag: 'latest'
   dashd:
     repository: voltha/voltha-dashd
     tag: 'latest'
@@ -156,4 +153,4 @@
 - "/netconf/netconf/main.py"
 - "-v"
 - "--consul=consul:8500"
-- "--grpc-endpoint=voltha:50555"
\ No newline at end of file
+- "--grpc-endpoint=voltha:50555"