No need to check product vndk version

Current LoadedApk checks product vndk version to find out if device's
product partition is treblelized and can be unbundled. However, product
is now fully treblelized from any device using current code (since R),
and product vndk version will be removed along with VNDK deprecation.
This change removes to check product vndk version while marking app as
unbundled.

Bug: 290159430
Test: libnativeloader_e2e_tests passed
Change-Id: I6dd965960ca11eb99e674f1a2d59fe05ce0b3354