Qt4: Remove dead code

Change-Id: I3c3575670720fafa1b81d553abaad81303836379
Reviewed-on: http://codereview.qt.nokia.com/351
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>

src/plugins/qt4projectmanager/qt4nodes.cpp

@@ -159,14 +159,6 @@ static void clearQt4NodeStaticData()
 
 enum { debug = 0 };
 
-namespace {
-    // sorting helper function
-    bool sortProjectFilesByPath(ProFile *f1, ProFile *f2)
-    {
-        return f1->fileName() < f2->fileName();
-    }
-}
-
 namespace Qt4ProjectManager {
 namespace Internal {