analyzer: move convenience factory back to base plugin

Change-Id: Ife82b74ce4b457dd9e6a6cc3749cb629aeeacf58
Reviewed-on: http://codereview.qt.nokia.com/1086
Reviewed-by: hjk <qthjk@ovi.com>
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>

src/plugins/valgrind/valgrindplugin.h

@@ -51,7 +51,6 @@ public:
     virtual bool initialize(const QStringList &arguments, QString *errorString);
     virtual void extensionsInitialized() {}
 
-    static void startValgrindTool(Analyzer::IAnalyzerTool *tool, Analyzer::StartMode mode);
 };
 
 } // namespace Internal