Debugger: Replace virtuals by capability flags.

Change-Id: If09efd21dc44e356eb575bb6170356fdbd409b39
Reviewed-on: http://codereview.qt.nokia.com/2625
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/debugger/qml/qmlcppengine.h

@@ -74,8 +74,6 @@ public:
 
     void setRegisterValue(int regnr, const QString &value);
     unsigned debuggerCapabilities() const;
-    virtual bool canWatchWidgets() const;
-    virtual bool acceptsWatchesWhileRunning() const;
 
     bool isSynchronous() const;
     QByteArray qtNamespace() const;