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/callgrindtool.cpp

@@ -680,11 +680,6 @@ IAnalyzerEngine *CallgrindToolPrivate::createEngine(const AnalyzerStartParameter
     return engine;
 }
 
-void CallgrindTool::startTool(StartMode mode)
-{
-    ValgrindPlugin::startValgrindTool(this, mode);
-}
-
 QWidget *CallgrindTool::createControlWidget()
 {
     return d->createControlWidget();