Method remove_edge

less_slow.cpp:5688–5691

    }

    void remove_edge(vertex_id_t from, vertex_id_t to) noexcept {
        edges_.erase(vertex_ids_t(from, to));
        edges_.erase(vertex_ids_t(to, from));
    }

    void compact() noexcept {
        // The `std::map` is already a balanced BST, so no need to do anything here.