Include STL string instead of nanobind's

Author: nicholasjng

tests/test_stl_bind_map.cpp

@@ -1,9 +1,10 @@
-#include <nanobind/stl/bind_map.h>
-#include <nanobind/stl/string.h>
 #include <map>
+#include <string>
 #include <unordered_map>
 #include <vector>
 
+#include <nanobind/stl/bind_map.h>
+
 namespace nb = nanobind;
 
 // testing for insertion of non-copyable class
@@ -47,7 +48,7 @@ NB_MODULE(test_bind_map_ext, m) {
     nb::bind_map<std::unordered_map<std::string, double const>>(m,
                                                                 "UnorderedMapStringDoubleConst");
 
-    nb::class_<E_nc>(m, "ENC").def(nb::init_implicit<int>()).def_readwrite("value", &E_nc::value);
+    nb::class_<E_nc>(m, "ENC").def(nb::init<int>()).def_readwrite("value", &E_nc::value);
 
     nb::bind_map<std::map<int, E_nc>>(m, "MapENC");
     m.def("get_mnc", &times_ten<std::map<int, E_nc>>);