Revert "audiopolicy: engine: use apm XML config file for volume curves"

This reverts commit 97717283c8e909e242efa615e66ad0b0faf6e9f6.

Bug: 125937703
Test: make
Change-Id: If7993ca2d9d5a6569ebf7bf4fdc82a7262d29faf
6 files changed