am e0002169: am 6ac63c7d: am 7cbc907b: Delete unsed mDnsLock.

* commit 'e0002169bda4a74e654852885d1b1ba3a4e39f47':
  Delete unsed mDnsLock.

services/core/java/com/android/server/ConnectivityService.java

@@ -199,7 +199,6 @@ public class ConnectivityService extends IConnectivityManager.Stub
     // 0 is full bad, 100 is full good
     private int mDefaultInetConditionPublished = 0;
 
-    private Object mDnsLock = new Object();
     private int mNumDnsEntries;
 
     private boolean mTestMode;