Consequences of disabling com.android.SystemUI
Is it safe to disable com.android.systemui? from Stack overflow :


  If you completely remove SystemUI.apk from the system, your device will hang on start-up and never fully boot again. Tried it before. ;) Framework-res and the system have some dependencies on SystemUI.


Please also read the comments where OP did what you proposed and is warned that it could result in soft bricking the device.