Replace boost::filesystem with std (#6432)

unit_tests/util/serialization.cpp

@@ -3,9 +3,10 @@
 #include "../common/range_tools.hpp"
 #include "../common/temporary_file.hpp"
 
-#include <boost/filesystem.hpp>
 #include <boost/test/unit_test.hpp>
 
+#include <filesystem>
+
 BOOST_AUTO_TEST_SUITE(serialization)
 
 using namespace osrm;

unit_tests/util/static_rtree.cpp

@@ -227,7 +227,7 @@ void sampling_verify_rtree(RTreeT &rtree,
 }
 
 template <typename RTreeT, typename FixtureT>
-auto make_rtree(const boost::filesystem::path &path, FixtureT &fixture)
+auto make_rtree(const std::filesystem::path &path, FixtureT &fixture)
 {
     return RTreeT(fixture.edges, fixture.coords, path);
 }