pulseaudio: fix work around for meta-ivi bluez5

Unfortunately, the meta-ivi append does more than just adjust packageconfig 
for bluez5, so we needed to copy their append bits into meta-mentor-staging 
and alter them to not use _remove, so we're able to undo their change, and 
mask out the original upstream append.

Signed-off-by: Christopher Larson <kergoth@gmail.com>