Merge changes from topics "2019-11-12-schuffelen-ivserver", "2019-11-12-schuffelen-record-audio", "2019-11-12-schuffelen-vsoc-lib", "2019-11-13-schuffelen-socket-forward"

* changes:
  Delete vsoc support libraries and tests
  Remove header dependencies on vsoc_lib
  Break build dependencies on vsoc_lib
  Delete the stream_audio host binary
  Remove references to stream_audio.
  Delete the record_audio host binary
  Delete the legacy audio hal
  Delete vsoc, vsoc-future hwcomposers
  Delete guest/hals/gralloc but not /legacy
  Delete ivserver
  Remove {assemble,launch,run}_cvd ivserver references
  Delete socket_forward_proxy
  Delete references to socket_forward_proxy
tree: df936d9e910849a10d83c4493267ce38e9504521
  1. common/
  2. guest/
  3. host/
  4. tests/
  5. tools/
  6. Android.bp
  7. Android.mk
  8. OWNERS
  9. TEST_MAPPING