remove tag collision check job from voltha-docs, as versioning works differently there

Change-Id: Ib2706dce5738c15348ddb7643873ef4273c31db1
diff --git a/jjb/verify/voltha-docs.yaml b/jjb/verify/voltha-docs.yaml
index cf3d4ac..4c97490 100644
--- a/jjb/verify/voltha-docs.yaml
+++ b/jjb/verify/voltha-docs.yaml
@@ -15,7 +15,6 @@
     name: 'verify-voltha-docs-jobs'
     jobs:
       - 'verify-licensed'
-      - 'tag-collision-reject'
       - 'make-unit-test':
           unit-test-targets: 'test'
           unit-test-keep-going: 'true'