Basic lands during booster draft
Basic lands are not removed from the booster pack in booster draft. They are drafted as any other card in the booster pack. From official MTR (Magic Tournament Rules):

7.7 Booster Draft Procedures
All players must open and draft the same type of booster at the same time. Players open their first booster pack and count the cards face down, removing token cards, rules cards, and any other non-game cards.