alsa_sound:Removed AWB from tunneled-input-formats

-AMRWB recording is failing because tunnelled mode is
 getting enabled in Sound Recorder use case
-Fix is to remove AWB parameter from tunneled-input-
 formats as it is not supported on A Family devices

Change-Id: I0cfc9b62639dfd179bc13af0988776a6c89999da
CRs-fixed: 521809