remove buck verification job for master branch

Change-Id: If2f0f9c5e451913d82aaa826e096c8d413ca56c2
diff --git a/jjb/onos/onos-verify.yaml b/jjb/onos/onos-verify.yaml
index ad77ec8..17f49e8 100644
--- a/jjb/onos/onos-verify.yaml
+++ b/jjb/onos/onos-verify.yaml
@@ -644,7 +644,6 @@
     build-node: 'ubuntu16.04-basebuild-8c-15g'
 
     stream:
-      - 'master'
       - 'onos-1.10'
       - 'onos-1.11'
       - 'onos-1.12'