删除可root手机系统应用

1.adb root
2.adb remount

[libfs_mgr]dt_fstab: Skip disabled entry for partition vendor
[libfs_mgr]dt_fstab: Skip disabled entry for partition odm
W Disabling verity for /system
E Skipping /system
W Disabling verity for /product
E Skipping /product
W Disabling verity for /vendor
E Skipping /vendor
W Disabling verity for /odm
E Skipping /odm
W No partitions to remount
/system/bin/remount exited with status 7
remount failed

3.adb disable-verity

verity is already disabled
using overlayfs
Now reboot your device for settings to take effect

4.adb reboot
5.adb root
6.adb remount

[libfs_mgr]dt_fstab: Skip disabled entry for partition vendor
[libfs_mgr]dt_fstab: Skip disabled entry for partition odm
[libfs_mgr]dt_fstab: Skip disabled entry for partition vendor
[libfs_mgr]dt_fstab: Skip disabled entry for partition odm
[libfs_mgr]dt_fstab: Skip disabled entry for partition vendor
[libfs_mgr]dt_fstab: Skip disabled entry for partition odm
[libfs_mgr]dt_fstab: Skip disabled entry for partition vendor
[libfs_mgr]dt_fstab: Skip disabled entry for partition odm
[libfs_mgr]dt_fstab: Skip disabled entry for partition vendor
[libfs_mgr]dt_fstab: Skip disabled entry for partition odm
remount succeeded

7.adb shell
b1:/ # cd system/priv-app/xx/
b1:/system/priv-app/xxx# rm -rf 123.apk
b1:/system/priv-app/xx# exit
(cd 到系统app所安装的目录，删除即可)
8.adb reboot