De-noise QmlJSPreviewRunner definition

Change-Id: I0a5c88e91f0e70f0a7bb73454d64056855fed47f
Reviewed-by: Niels Weber <niels.weber@theqtcompany.com>

src/plugins/qmljseditor/qmljspreviewrunner.h

@@ -42,10 +42,6 @@ public:
     bool isReady() const;
     void run(const QString &filename);
 
-signals:
-
-public slots:
-
 private:
     QString m_qmlViewerDefaultPath;
 
@@ -53,7 +49,6 @@ private:
 
 };
 
-
 } // namespace Internal
 } // namespace QmlJSEditor