[ALPS03893095] Selinux: MTK BT HAL

[Detail]
AOSP has defined neverallow rules
to restrict direct access to system files.

[Solution]
Since MTK does not use "/data/misc/bluedroid/" to
store BT address. It should be alright to remove
this kind of thing.

MTK-Commit-Id: 5b3aae9aebd39c24a3846c27c7ca9fceda9513d3

Change-Id: I5a8420e9f5259259b2bd11a6da033a140f0bea7c
CR-Id: ALPS03893095
Feature: BT Chipset Capability