QmlJS: Remove deprecated enum functions in QmlObjectValue.

Change-Id: I30c1636f4946f465e5924493e561310f506df3d7
Reviewed-on: http://codereview.qt.nokia.com/1043
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@nokia.com>

src/libs/languageutils/fakemetaobject.h

@@ -62,6 +62,7 @@ public:
     QString key(int index) const;
     int keyCount() const;
     QStringList keys() const;
+    bool hasKey(const QString &key) const;
 };
 
 class LANGUAGEUTILS_EXPORT FakeMetaMethod {