Treat logback as direct dependency of ONOS
diff --git a/pom.xml b/pom.xml
index 82f3958..7484de0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -172,7 +172,6 @@
       <artifactId>jackson-mapper-asl</artifactId>
       <version>1.9.11</version>
     </dependency>
-    <!-- Not sure if it's mandatory for ONOS -->
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-core</artifactId>