Revert "set board flag for ALSA to use "Voice Speaker" and fix mic in speakerphone call patch by Pinter"

This reverts commit 3c43138bf7800452dcc99b933d53a45603fc8fef.

I changed the code, this flag is not used anymore.

Change-Id: I1fbea62441a631d9982c82cefa73882abcc4fbc5