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/pythoneditor.cpp

@@ -45,6 +45,7 @@
 #include <QFileInfo>
 
 namespace PythonEditor {
+namespace Internal {
 
 PythonEditor::PythonEditor(EditorWidget *editorWidget)
     :BaseTextEditor(editorWidget)
@@ -90,4 +91,5 @@ bool PythonEditor::open(QString *errorString,
     return status;
 }
 
+} // namespace Internal
 } // namespace PythonEditor