Remove libpdx*, libbufferhub* from VNDK

This is largely inspired by ag/3865679: dependencies from libui and
libgui to libpdx_default_transport and libbufferhubque are cut when
building libui and libgui for vendors. This is primarily to exclude
libpdx* and libbufferhubqueue from VNDK.

Bug: 79151096
Test: Build system and inspect bufferhub/pdx related libraries are no
longer in vendor partition.

Change-Id: Idcd524db2a9f6ec96262bcf590fc0f80a0bd26e7
Merged-In: Id4768162aeb72b71d63d7e4498980f276ef58e6b