Rashi on Deuteronomy 12:2/רש"י על דברים י״ב:ב׳

1אבד תאבדון YE SHALL UTTERLY DESTROY — Destroy and again destroy! (i.e. utterly destroy). From here we learn that he who eradicates an object of idol-worship must thoroughly uproot it (i.e. remove every trace of it) (Sifrei Devarim 60:1).

2את כל המקמות אשר עבדו שם וגו׳ [YE SHALL UTTERLY DESTROY] ALL THE PLACES (according to Rashi: FROM ALL THE PLACES) WHEREIN [THE NATIONS …] SERVED — And what shall ye destroy from them? Their gods which are upon the mountains (Avodah Zarah 45a).