Remove unused variable

Clean up to remove unused variable.

Change-Id: Iad05d6db2fccdaff7419de02b29d74a18b00c3b4
Test: TH
diff --git a/service/src/com/android/server/ConnectivityService.java b/service/src/com/android/server/ConnectivityService.java
index f760d3b..c1de7a0 100644
--- a/service/src/com/android/server/ConnectivityService.java
+++ b/service/src/com/android/server/ConnectivityService.java
@@ -3872,7 +3872,6 @@
             }
 
             final boolean wasValidated = nai.lastValidated;
-            final boolean wasDefault = isDefaultNetwork(nai);
             final boolean wasPartial = nai.partialConnectivity;
             nai.partialConnectivity = ((testResult & NETWORK_VALIDATION_RESULT_PARTIAL) != 0);
             final boolean partialConnectivityChanged =