Remove audio files per author request

Original author Dennis Cleiren has contacted us and asked
to remove 5 audio files that were not intended to be
merged (miscommunication with codeworkx of original patches).

For reference:
http://review.cyanogenmod.org/#/c/13215/
http://review.cyanogenmod.org/#/c/16482/

Change-Id: Idad43b62f2d3fbf593b80b56ee129dd6b98e30eb
Remove CM Default Wallpaper

Change-Id: Ib484e46ad03281338c42e24c8c4fde487921b513
Add HALO to the build

Change-Id: Id7646cf6b7aee6cda14bcd5de232d8a38c6fd924
.gitignore - add proprietary folder

Change-Id: I128b8191328db5ed8acde408ccb0d063d3c2f17b
Add KT/SKT spn value

Change-Id: I461eaa31d84fc1f494839aad591564d9875aefed
Revert "Remove Term, su, and CMUpdater from user builds"

This reverts commit a21887e8785851b0a71b55551430fe0ae6d76f8c.
Don't build CMUpdater

Change-Id: I29ae91744fd5b2b495df9a0eb4b7a1b8cc15037c