Detach VNDK using core library list from VNDK APEX

Some devices require VNDK using core library list, but this is dependent
to system image rather than VNDK version. This change removes VNDK using
core variant library list file from VNDK APEX, and also remove VNDK
version from its filename.

Bug: 142599349
Test: m -j passed && aosp_cf_x86_go_phone booted
Change-Id: Ibc53b8dfc9d38e14bbaa878154034d25a6d34089