[ONOS-3634] Remove readme tag from app.xml

Change-Id: I536f54f74586a0bb5c671564f71b44a0a871d5f6
diff --git a/app/app.xml b/app/app.xml
index b67486a..c8c33ba 100644
--- a/app/app.xml
+++ b/app/app.xml
@@ -19,7 +19,6 @@
      featuresRepo="mvn:${project.groupId}/${project.artifactId}/${project.version}/xml/features"
      features="${project.artifactId}">
     <description>${project.description}</description>
-    <readme>OLT application for CORD.</readme>
     <artifact>mvn:${project.groupId}/${project.artifactId}/${project.version}</artifact>
     <artifact>mvn:${project.groupId}/onos-app-olt-api/${project.version}</artifact>
 </app>