cleaning up some TODOs

Change-Id: Ib2380e9533ba30c6f9fdf79aed1879dbbe3589a7
diff --git a/core/store/dist/src/main/java/org/onosproject/store/cluster/impl/HazelcastLeadershipService.java b/core/store/dist/src/main/java/org/onosproject/store/cluster/impl/HazelcastLeadershipService.java
index b130c13..a76eb14 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/cluster/impl/HazelcastLeadershipService.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/cluster/impl/HazelcastLeadershipService.java
@@ -175,7 +175,7 @@
         for (Topic topic : topics.values()) {
             Leadership leadership = new Leadership(topic.topicName(),
                                                    topic.leader(),
-                                                   0L); // TODO: epoch not used
+                                                   0L);
             result.put(topic.topicName(), leadership);
         }
         return result;