JsonWizard: Replace Python class wizard with a JsonWizard

* Remove Qt4 support.
* Remove some UI options that did not do anything in the original wizard

Change-Id: I9647cbc6cd0958a02df5b2fe480b9c8069249521
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>

src/plugins/pythoneditor/pythoneditorplugin.cpp

@@ -31,7 +31,6 @@
 #include "pythoneditorplugin.h"
 #include "pythoneditor.h"
 #include "pythoneditorconstants.h"
-#include "wizard/pythonclasswizard.h"
 #include "tools/pythonhighlighter.h"
 
 #include <coreplugin/icore.h>
@@ -222,9 +221,6 @@ bool PythonEditorPlugin::initialize(const QStringList &arguments, QString *error
     if (!icon.isNull())
         Core::FileIconProvider::registerIconOverlayForMimeType(icon, C_PY_MIMETYPE);
 
-    // Add Python files and classes creation dialogs
-    addAutoReleasedObject(new ClassWizard);
-
     return true;
 }