Revert "frameworks/av: Add DTS M6 support"

This reverts commit 289dc80642067ca596170bad4e8f76f6fcaecef3.
Initial pre-integrated CAF source for DTS M6 integration (for frameworks)

Upgraded initial commit to Tag / Build ID LNX.LA.3.2-08050-8x74.1 (Android 4.3)