Revert "[1/3] Effects: Add a stereo widening effect"

This reverts commit 66755de8ba4a5232124c52b3f82aac5190d37fe1.

Conflicts:
	src/com/bel/android/dspmanager/service/HeadsetService.java

Change-Id: Iade62c29224ba164d6b0108a2c0aa0be0141ac1b