Revert "Half-press focus button & Fixed audio through 35MM headsets"

This reverts commit 2c229826610153747fff85f4b32a5174599c1bd0.
Half-press focus button

Change-Id: I0bb2e6a544f1f021f53bd9f403f82b6a84c8e0bb
Fix headset detection.

Original CM Commit below by Shelnutt2
Services.jar: Reworked computeNewHeadsetState function to
set state in a manor used in ics. This allows states such
as 129 and 130, which are used for 35MM_HEADSET to be
correctly registered as a new state.

Change-Id: I3bd1ec17d0cd184593edf330f482f09396785e76