Fix inheritance of PRODUCT_PROPERTY_OVERRIDES for CM audio files

Otherwise the ones set in CM vendor will be overridden by these.

Change-Id: I3f87dfd009d8ddfd48972c15770599742b12c4af

Author: Abhisek Devkota <ciwrl@cyanogenmod.com>
Remove extra product property overrides

This appears to clash with vendor/cm/common mk's for overrides; causes
a broken default alarm (and OnTheHunt is so bleh).

Change-Id: I5ec990d3c5ad56b573c45f1a3b20169c989851a0