removed undefined slot

src/plugins/qmljsinspector/qmljslivetextpreview.h

@@ -37,12 +37,8 @@ public:
     void updateDocuments();
 
     void setActiveObject(const QDeclarativeDebugObjectReference &object);
-
     void mapObjectToQml(const QDeclarativeDebugObjectReference &object);
 
-public slots:
-    void setCurrentEngineId(int id);
-
 signals:
     void selectedItemsChanged(const QList<QDeclarativeDebugObjectReference> &objects);