Revert "hal: Fix wrong output device for voip/music concurrent playback"

As the device restoration is now handled from APM side, it's not needed
anymore.

This reverts commit a9d11687527aca64d5e2025722be5841579876d8.

CRs-Fixed: 2139110
Change-Id: I06c63ab23355a12e07d6c4999e9c6bfab549c48e
1 file changed