Gui: remove some more deprecated Py2

src/Gui/ApplicationPy.cpp

@@ -1144,16 +1144,12 @@ PyObject* Application::sAddCommand(PyObject * /*self*/, PyObject *args)
 
         std::string file;
         // usually this is the file name of the calling script
-#if (PY_MAJOR_VERSION > 3 || (PY_MAJOR_VERSION==3 && PY_MINOR_VERSION>=5))
         Py::Object info = list.getItem(0);
         PyObject *pyfile = PyStructSequence_GET_ITEM(*info,1);
         if(!pyfile)
             throw Py::Exception();
         file = Py::Object(pyfile).as_string();
-#else
-        Py::Tuple info = list.getItem(0);
-        file = info.getItem(1).as_string();
-#endif
+
         Base::FileInfo fi(file);
         // convert backslashes to slashes
         file = fi.filePath();