@Mario You can use custom css for this. In the dashboard, go to Appearance->Theme Options->Design Options Tab->Custom CSS. Paste the following css and click on ‘Save all Changes’. .single .default-wp-page { display: none; }
@Mariolike this.. I think you you forget to mention the link. We only provide simple few lines of css tweaks if it needs more changes then for that case you will need to hire a developer.