am 5feb053c: am f01a53b6: am 1933782f: Remove kickback/talkback/soundback from SDK.

Merge commit '5feb053ca7b92e85f5e52e5674b60885edc016e7'

* commit '5feb053ca7b92e85f5e52e5674b60885edc016e7':
  Remove kickback/talkback/soundback from SDK.