Delete INetworkManagementService#getNetdService.

This code is unused.

Test: builds, boots
Test: atest frameworks-net
Change-Id: I45e796c0dd049e8ac722cc79eea8df81dd2ad28c

core/java/android/os/INetworkManagementService.aidl

@@ -18,7 +18,6 @@
 package android.os;
 
 import android.net.InterfaceConfiguration;
-import android.net.INetd;
 import android.net.INetworkManagementEventObserver;
 import android.net.ITetheringStatsProvider;
 import android.net.Network;
@@ -46,11 +45,6 @@ interface INetworkManagementService
      */
     void unregisterObserver(INetworkManagementEventObserver obs);
 
-    /**
-     * Retrieve an INetd to talk to netd.
-     */
-    INetd getNetdService();
-
     /**
      * Returns a list of currently known network interfaces
      */

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

@@ -950,18 +950,6 @@ public class NetworkManagementService extends INetworkManagementService.Stub
     //
     // INetworkManagementService members
     //
-    @Override
-    public INetd getNetdService() throws RemoteException {
-        final CountDownLatch connectedSignal = mConnectedSignal;
-        if (connectedSignal != null) {
-            try {
-                connectedSignal.await();
-            } catch (InterruptedException ignored) {}
-        }
-
-        return mNetdService;
-    }
-
     @Override
     public String[] listInterfaces() {
         mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);