Remove empty sync directory.
Remove empty sync directory.

kevinmontuori/nitrogen,joaohf/nitrogen,choptastic/nitrogen,stuart-thackray/nitrogen,choptastic/nitrogen,nitrogen/nitrogen,joaohf/nitrogen,joaohf/nitrogen,choptastic/nitrogen,nitrogen/nitrogen,kevinmontuori/nitrogen,stuart-thackray/nitrogen,stuart-thackray/nitrogen,kevinmontuori/nitrogen,nitrogen/nitrogen