Remove unused resolveSystemService

package android.bluetooth;

import android.annotation.NonNull;

import android.annotation.Nullable;

import android.annotation.SuppressLint;

import android.content.ComponentName;

import android.content.Context;

import android.content.Intent;

import android.content.pm.ApplicationInfo;

import android.content.pm.PackageManager;

import android.content.pm.ResolveInfo;

import android.os.Build;

import android.os.Handler;

import android.os.IBinder;

import android.os.Looper;

import android.os.Message;

import android.os.RemoteException;

import android.os.UserHandle;

import android.util.CloseGuard;

import android.util.Log;

import java.util.List;

/**

 * Connector for Bluetooth profile proxies to bind manager service and

 * profile services

    private final String mServiceName;

    private volatile T mService;

    // -3 match with UserHandle.USER_CURRENT_OR_SELF

    private static final UserHandle USER_HANDLE_CURRENT_OR_SELF = UserHandle.of(-3);

    private static final int MESSAGE_SERVICE_CONNECTED = 100;

    private static final int MESSAGE_SERVICE_DISCONNECTED = 101;

        }

    };

    private @Nullable ComponentName resolveSystemService(@NonNull Intent intent,

            @NonNull PackageManager pm) {

        List<ResolveInfo> results = pm.queryIntentServices(intent,

                PackageManager.ResolveInfoFlags.of(0));

        if (results == null) {

            return null;

        }

        ComponentName comp = null;

        for (int i = 0; i < results.size(); i++) {

            ResolveInfo ri = results.get(i);

            if ((ri.serviceInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 0) {

                continue;

            }

            ComponentName foundComp = new ComponentName(ri.serviceInfo.applicationInfo.packageName,

                    ri.serviceInfo.name);

            if (comp != null) {

                throw new IllegalStateException("Multiple system services handle " + intent

                        + ": " + comp + ", " + foundComp);

            }

            comp = foundComp;

        }

        return comp;

    }

    private final IBluetoothProfileServiceConnection mConnection =

            new IBluetoothProfileServiceConnection.Stub() {

        @Override