This document explains how to completely remove the Palo Alto GlobalProtect app as well as its VPN configuration in the settings.
How to Uninstall Palo Alto GlobalProtect on iOS
Locate the GlobalProtect app on the home screen.
Press and hold a finger on the app to activate the delete function.
Press the X on the app icon to delete it and tap "Delete" on the confirmation box.
To confirm that the VPN profile was removed, go to Settings and then VPN.
If there is a GlobalProtect VPN configuration listed, click on the configuration to open it.
Select Delete VPN to delete the GlobalProtect VPN configuration.
The GlobalProtect VPN configuration will be removed from the list if correctly removed.