remove dependency on Devices for handling MastershipEvents

Change-Id: Ie1670e77d3eee5dbd597f574ebe16d687e7b551e
diff --git a/core/net/src/test/java/org/onlab/onos/net/device/impl/DeviceManagerTest.java b/core/net/src/test/java/org/onlab/onos/net/device/impl/DeviceManagerTest.java
index d278c24..58af77a 100644
--- a/core/net/src/test/java/org/onlab/onos/net/device/impl/DeviceManagerTest.java
+++ b/core/net/src/test/java/org/onlab/onos/net/device/impl/DeviceManagerTest.java
@@ -259,7 +259,7 @@
         }
 
         @Override
-        public void triggerProbe(Device device) {
+        public void triggerProbe(DeviceId deviceId) {
         }
 
         @Override