Revert "audio: add device specific audio_effects.conf file"

This reverts commit ed902949000a453e8c43e4062bf1fc6ae3d24322.

Change-Id: I74ffa5353fbaabe0dc7203639b8bc00c70b5e373
Merge branch 'cm-10.2' of https://github.com/CyanogenMod/android_device_samsung_crespo into cd-4.3