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();

src/Main/MainGui.cpp

@@ -159,12 +159,10 @@ int main( int argc, char ** argv )
     }
 #endif
 
-#if PY_MAJOR_VERSION >= 3
 #if defined(_MSC_VER) && _MSC_VER <= 1800
     // See InterpreterSingleton::init
     Redirection out(stdout), err(stderr), inp(stdin);
 #endif
-#endif // PY_MAJOR_VERSION
 
     // Name and Version of the Application
     App::Application::Config()["ExeName"] = "FreeCAD";