Revert "Deprecate support for legacy effect config file audio_effects.conf"

This reverts commit c11621e64e3a009fe88a8a3ba1dffab5d9828601.

Reason for revert: The legacy effect config parsing logic will be kept in the framework for now, but we will add metrics to track any possible partner usage of the config file.

Change-Id: I873e2e18924688df52c9ed761950f132d16dcc29
9 files changed