Switch to std::filesystem

Change-Id: If70258048d6f54c3e9f0a25bf8f3e327411c42ac
diff --git a/wscript b/wscript
index e6a986e..d2c16f6 100644
--- a/wscript
+++ b/wscript
@@ -39,7 +39,7 @@
 
     conf.check_sqlite3()
 
-    conf.check_boost(lib='filesystem program_options', mt=True)
+    conf.check_boost(lib='program_options', mt=True)
 
     if conf.env.WITH_TESTS:
         conf.check_boost(lib='unit_test_framework', mt=True, uselib_store='BOOST_TESTS')