Remove unused local var

Change-Id: Ied95e75aaecd7f2fc278034c7987fe263ef20e22
diff --git a/core/net/src/main/java/org/onosproject/app/impl/ApplicationManager.java b/core/net/src/main/java/org/onosproject/app/impl/ApplicationManager.java
index 6c39b6a..c82c775 100644
--- a/core/net/src/main/java/org/onosproject/app/impl/ApplicationManager.java
+++ b/core/net/src/main/java/org/onosproject/app/impl/ApplicationManager.java
@@ -160,7 +160,6 @@
     @Override
     public void uninstall(ApplicationId appId) {
         checkNotNull(appId, APP_ID_NULL);
-        CountDownLatch latch = new CountDownLatch(1);
         updateStoreAndWaitForNotificationHandling(appId, store::remove);
     }