Revert "Audio: minor tweaks"

This reverts commit bb263c44ac239264b10fc5c3ad9833599486701f.

Change-Id: I44c3fc9408f2a6520b6411fc9cec8e5be685e9ae
Revert "N7100: Enable Bluetooth Low Energy"

Improves bt connection

This reverts commit 2fe7b1c7ead172faff8a12f5e3ea337c2d172961.

Change-Id: Id947740a5bb38782dab805d849c48a8283883384