Revert "Switch to private fork of android_packages_apps_Settings"

AirCast-style DNLA mirroring isn't ready yet.

This reverts commit bcc1747219d5221a7f51c49da66df2a941a05b9a.
Revert "Switch to fork of android_frameworks_base."

AirCast-style DNLA mirroring isn't ready yet.

This reverts commit 401a303022b4f4ff9c1534cdecb314d350cd06c5.