Remove a useless method

No seriously ?

Test: builds
Change-Id: Ie1508ce50a39e4c69a4b238067bab1e83ddaf019
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index bd590d3..b40ea5b 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -5854,10 +5854,6 @@
         return nai == getDefaultNetwork();
     }
 
-    private boolean isDefaultRequest(NetworkRequestInfo nri) {
-        return nri.request.requestId == mDefaultRequest.requestId;
-    }
-
     // TODO : remove this method. It's a stopgap measure to help sheperding a number of dependent
     // changes that would conflict throughout the automerger graph. Having this method temporarily
     // helps with the process of going through with all these dependent changes across the entire