Remove libbinder dependency for NDK backend

The current dependency on libbinder was accidental, not required for its
clients. It prevents the client libraries from being packaged in Vendor
APEX.

Bug: 295803971
Bug: 316234086
Test: launch cuttlefish, CtsMediaAudioTestCases
Change-Id: I042018ded92f88ab1a25f637f884313934cdfefe