As App Launcher is a default Zebra(Motorola) application, you would need to contact them in order to gather this information.
I'm assuming that you mean App Launcher and not App Center. If that is the case, these are the combination of keys that I have used in the past.
I just delete them entirely using "-" at the start of each entry. I don't believe the built in Registry section of the Enabler Configuration will allow you to remove registry entries in this way and so you will likely have to use a separate .REG file placed in the Application directory on the device. All CE based Zebra/Motorola devices will automatically merge any .REG files in the application on Coldboot.
Thank you very much for answered.
Indeed, i am talking about of App Center, not App Launcher.
I resolve my problem using keys below.
Many thanks for your help.