Bugfix: Fix unit test error caused by unreferenced OSGI package

Change-Id: I7c5452a57d2a56a2862e6e4d96e4873fe80f7ae6
diff --git a/incubator/api/src/test/java/org/onosproject/incubator/net/virtual/event/AbstractVirtualListenerManagerTest.java b/incubator/api/src/test/java/org/onosproject/incubator/net/virtual/event/AbstractVirtualListenerManagerTest.java
index 6614941..f96124b 100644
--- a/incubator/api/src/test/java/org/onosproject/incubator/net/virtual/event/AbstractVirtualListenerManagerTest.java
+++ b/incubator/api/src/test/java/org/onosproject/incubator/net/virtual/event/AbstractVirtualListenerManagerTest.java
@@ -38,7 +38,6 @@
 import org.onosproject.incubator.net.virtual.VirtualNetworkService;
 import org.onosproject.incubator.net.virtual.VirtualPort;
 import org.onosproject.net.DeviceId;
-import org.osgi.framework.BundleContext;
 
 import java.util.ArrayList;
 import java.util.List;