Remove hidden deprecated getActiveNetworkQuotaInfo

getActiveNetworkQuotaInfo has never been in API surface since it
was introduced. It became essentially functionless since android O,
so there should be no usage dependency upon the hidden method,
In order to support ConnectivityService mainline, remove the
useless function to prevent necessary dependency.

Bug: 172183305
Test: atest FrameworksNetTests
Change-Id: Ia685b3260256d465ef614b2f577d13344074c787

core/java/android/net/ConnectivityManager.java

@@ -2108,17 +2108,6 @@ public class ConnectivityManager {
         // ignored
     }
 
-    /** {@hide} */
-    @Deprecated
-    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
-    public NetworkQuotaInfo getActiveNetworkQuotaInfo() {
-        try {
-            return mService.getActiveNetworkQuotaInfo();
-        } catch (RemoteException e) {
-            throw e.rethrowFromSystemServer();
-        }
-    }
-
     /**
      * @hide
      * @deprecated Talk to TelephonyManager directly

core/java/android/net/IConnectivityManager.aidl

@@ -25,7 +25,6 @@ import android.net.Network;
 import android.net.NetworkAgentConfig;
 import android.net.NetworkCapabilities;
 import android.net.NetworkInfo;
-import android.net.NetworkQuotaInfo;
 import android.net.NetworkRequest;
 import android.net.NetworkState;
 import android.net.ISocketKeepaliveCallback;
@@ -76,7 +75,6 @@ interface IConnectivityManager
     @UnsupportedAppUsage(maxTargetSdk = 30, trackingBug = 170729553)
     NetworkState[] getAllNetworkState();
 
-    NetworkQuotaInfo getActiveNetworkQuotaInfo();
     boolean isActiveNetworkMetered();
 
     boolean requestRouteToHostAddress(int networkType, in byte[] hostAddress,

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

@@ -113,7 +113,6 @@ import android.net.NetworkInfo.DetailedState;
 import android.net.NetworkMonitorManager;
 import android.net.NetworkPolicyManager;
 import android.net.NetworkProvider;
-import android.net.NetworkQuotaInfo;
 import android.net.NetworkRequest;
 import android.net.NetworkSpecifier;
 import android.net.NetworkStack;
@@ -1779,14 +1778,6 @@ public class ConnectivityService extends IConnectivityManager.Stub
         return result.toArray(new NetworkState[result.size()]);
     }
 
-    @Override
-    @Deprecated
-    public NetworkQuotaInfo getActiveNetworkQuotaInfo() {
-        Log.w(TAG, "Shame on UID " + Binder.getCallingUid()
-                + " for calling the hidden API getNetworkQuotaInfo(). Shame!");
-        return new NetworkQuotaInfo();
-    }
-
     @Override
     public boolean isActiveNetworkMetered() {
         enforceAccessPermission();