remove no longer required audio flags

* Enabled by default after http://review.cyanogenmod.org/#/c/81008
  and http://review.cyanogenmod.org/#/c/81009

Change-Id: Ie8a8b301b3afd0260b32cc4df3dc9a523e339e36
ramdisk: Add multi SIM support

start ril daemons based on multi sim property
"persist.radio.multisim.config".

Change-Id: Iafa2b0fbd9ff15c2e26b9c05f6c5b8f2ad2adabe