remove field _id on cube load
remove field _id on cube load

mlgruby/mining,avelino/mining,AndrzejR/mining,seagoat/mining,chrisdamba/mining,chrisdamba/mining,mining/mining,avelino/mining,jgabriellima/mining,jgabriellima/mining,mlgruby/mining,mlgruby/mining,AndrzejR/mining,mining/mining,seagoat/mining