Android12 MTK 去掉多用户

1、需求：

（1）去掉设置中系统--多用户

（2）去掉下拉菜单中多用户按钮

2、解决

路径：***/frameworks/base/core/java/android/os/UserManager.java

/**
     * Returns whether this device supports multiple users with their own login and customizable
     * space.
     * @return whether the device supports multiple users.
     */
    public static boolean supportsMultipleUsers() {
        /* return getMaxSupportedUsers() > 1
                && SystemProperties.getBoolean("fw.show_multiuserui",
                Resources.getSystem().getBoolean(R.bool.config_enableMultiUserUI)); */
		return false;
    }