Python: Do not export symbols

Nothing depends on this plugin, so these exports are not needed.

Change-Id: I7a6c1c6fd1dd355c904d2dcb6d3f0522cf30adcd
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/pythoneditor/pythoneditorfactory.cpp

@@ -39,6 +39,7 @@
 #include <QDebug>
 
 namespace PythonEditor {
+namespace Internal {
 
 EditorFactory::EditorFactory(QObject *parent)
     : Core::IEditorFactory(parent)
@@ -56,4 +57,5 @@ Core::IEditor *EditorFactory::createEditor(QWidget *parent)
     return widget->editor();
 }
 
+} // namespace Internal
 } // namespace PythonEditor