Debugger: Make DebuggerEngine internal

Expose less of debugger internals to the device plugins.

Change-Id: Ie78756b033fae3fe02bff92eadf26b7319990605
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>
Reviewed-by: Christian Kandeler <christian.kandeler@theqtcompany.com>
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/debugger/qml/qmlengine.h

@@ -60,7 +60,6 @@ public:
                        DebuggerEngine *masterEngine = 0);
     ~QmlEngine();
 
-    void notifyInferiorSetupOk();
     void notifyEngineRemoteServerRunning(const QByteArray &, int pid);
     void notifyEngineRemoteSetupFinished(const RemoteSetupResult &result);
 
@@ -90,7 +89,6 @@ public:
 signals:
     void tooltipRequested(const QPoint &mousePos,
         TextEditor::TextEditorWidget *editorWidget, int cursorPos);
-    void aboutToNotifyInferiorSetupOk();
 
 private slots:
     void disconnected();