remove YMS javadocs from the top level API docs

Change-Id: I5d7072e6944ddc05c2b2f590fc407ce16496ec0b
diff --git a/docs/external-excludes b/docs/external-excludes
index 04e4c6b..8bd371a 100644
--- a/docs/external-excludes
+++ b/docs/external-excludes
@@ -98,3 +98,4 @@
 org.onosproject.routing.*
 org.onosproject.yangutils.parser.antlrgencode
 org.onosproject.yangutils.*
+org.onosproject.yms*
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*