Fixed javadoc warning.
diff --git a/core/api/src/main/java/org/onlab/onos/cluster/MastershipStore.java b/core/api/src/main/java/org/onlab/onos/cluster/MastershipStore.java
index 08fa57b..5c0c207 100644
--- a/core/api/src/main/java/org/onlab/onos/cluster/MastershipStore.java
+++ b/core/api/src/main/java/org/onlab/onos/cluster/MastershipStore.java
@@ -52,7 +52,6 @@
      *
      * @param nodeId   controller instance identifier
      * @param deviceId device identifier
-     * @param role     new role
      * @return a mastership event
      */
     MastershipEvent setMaster(NodeId nodeId, DeviceId deviceId);