remove YMS javadocs from the top level API docs

Change-Id: I5d7072e6944ddc05c2b2f590fc407ce16496ec0b
diff --git a/docs/internal-apps b/docs/internal-apps
index 61f86b6..1f46702 100644
--- a/docs/internal-apps
+++ b/docs/internal-apps
@@ -52,3 +52,4 @@
 org.onosproject.gangliametrics*
 org.onosproject.graphitemetrics*
 org.onosproject.influxdbmetrics*
+org.onosproject.yms*