Method remove

src/Misc/HashGrid.h:49–51

            throw NotImplementedError("hashgrid::insert_multiple is not implemented");
        }
        virtual bool remove(int obj_id, const VectorF& coordinate) {
            throw NotImplementedError("hashgrid::remove is not implemented");
        }
        virtual bool occupied(int obj_id, const VectorF& coordinate) const {
            throw NotImplementedError("hashgrid::occupied is not implemented");
        }