Remove usage of Telephonymanager getDefault() and from() hidden APIs

This CL replaces with getSystemService(TelephonyManager.class)

Bug: 140768340
Test: atest frameworks/base/tests/net
Change-Id: I0f14cc5440fa85c81ab90f3199e9e91c1b00f5e1

services/core/java/com/android/server/net/NetworkStatsService.java

@@ -337,7 +337,7 @@ public class NetworkStatsService extends INetworkStatsService.Stub {
                 powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
 
         NetworkStatsService service = new NetworkStatsService(context, networkManager, alarmManager,
-                wakeLock, getDefaultClock(), TelephonyManager.getDefault(),
+                wakeLock, getDefaultClock(), context.getSystemService(TelephonyManager.class),
                 new DefaultNetworkStatsSettings(context), new NetworkStatsFactory(),
                 new NetworkStatsObservers(), getDefaultSystemDir(), getDefaultBaseDir());
         service.registerLocalService();