Android 13 Aosp SystemServer功能裁剪(PackageManager.hasSystemFeature())
系统定制，裁剪Wifi，bt等模块
UI部分可参考： SystemUI 隐藏下拉快捷面板部分模块(wifi,bt,nfc等)入口
Android系统启动后Zygote进程会forkSystemServer进程。SystemServer启动Andorid服务.
frameworks/base/services/java/com/android/server/SystemServer.java
if (context.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_WIFI)) {
// Wifi Service must be started first for wifi-related services.
if (!isArc) {
t.traceBegin("StartWifi");
mSystemServiceManager.startServiceFromJar(
WIFI_SERVICE_CLASS, WIFI_APEX_SERVICE_JAR_PATH);
t.tr