“You cannot conduct your Battle Phase the turn you activate this card” is not an effect that can be negated and will still apply even if Scrap Lube is removed from the field during the turn it is activated.[1]
OCG Rulings
"You cannot conduct your Battle Phase the turn you activate this card" is not treated as an effect. Thus, if "Scrap Lube" leaves the field or is negated (by "Imperial Order", etc.) in the same turn that it is activated, then you still cannot conduct your Battle Phase.[2]