QmlProfiler: Use correct coding style and remove dead code

Change-Id: I10967ee080076d40cf54aaf4ae28c63d78b7f216
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>

src/plugins/qmlprofiler/qmlprofilerruncontrol.h

@@ -54,7 +54,6 @@ public:
 
 signals:
     void processRunning(quint16 port);
-    void timeUpdate();
 
 public slots:
     bool startEngine();