Revert "AudioFlinger: Keep track of music effect thread when pri..."

Revert submission 25712917

Reason for revert: Droid-monitor triggered revert likely due to breakage in b/330202134. Will be verifying through ABTD before submission.

Reverted changes: /q/submissionid:25712917

Change-Id: Iacde14e4dc8c644b55741557bce81101ce2b5f19
5 files changed