QmlJS: Move commonly used functions to qmlutils.h.

Change-Id: I22376d96fe575bc00a55094c06af80e32a5587e6
Reviewed-on: http://codereview.qt-project.org/6238
Sanity-Review: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@nokia.com>

src/libs/qmljs/qmljsbind.h

@@ -69,8 +69,6 @@ public:
     ObjectValue *findAttachedJSScope(AST::Node *node) const;
     bool isGroupedPropertyBinding(AST::Node *node) const;
 
-    static QString toString(AST::UiQualifiedId *qualifiedId, QChar delimiter = QChar('.'));
-
 protected:
     using AST::Visitor::visit;