There is a separate check box setting for android under: Project Settings - Android - Package game data inside .apk
No problems! Don’t forget to accept the answer though 
Hey guys,
so I am trying to package my GearVR project (Android ETC2) without .Pak files.
In Packaging Settings I unchecked “Use Pak Files” and also “Generate Chunks”.
Nevertheless, after packaging I still have one single .Pak file in the .obb content folder.
You have been a great help once again! Thank you.