message: Remove some unused include
diff: */
  #include <iostream>
  -#include <fstream>
  -#include <string>
  -#include <algorithm>
  -#include <utility> // std::pair, std::make_pair
  -#include <cmath> // float comparison
  -#include <limits>
  -#include <functional> // greater
  -#include <tuple> // std::tie
  +#include <tuple>
  +#include <vector>
  #define BOOST_TEST_DYN_LINK
  #define BOOST_TEST_MODULE "collapse"
  #include <boost/mpl/list.hpp>
  #include "gudhi/Flag_complex_sparse_matrix.h"
  -#include "gudhi/Rips_edge_list.h"
  -#include "gudhi/graph_simplicial_complex.h"
  -#include "gudhi/distance_functions.h"
  using Filtration_value = double;
  using Vertex_handle = size_t;
  