message: Remove smart knob plugin
  We noticed that Smart knob injects default functions and, for now,
  there is no option to avoid this behavior.
  A issue has been opened in order to add this option into the plugin
diff: @@ -46,7 +46,6 @@ const withStoryStyles = storyFn => {
  };
  const loadStories = () => {
  - addDecorator(withSmartKnobs);
  addDecorator(withKnobs);
  addDecorator(withStoryStyles);
  addDecorator(withThemeProvider);
  