Fix build with msvc2010

override on destructors are not very useful anyhow, but also msvc2010
doesn't like them at all.

Change-Id: I2d5f4b0d6148c5e66d2cba604d305707269d12e0
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

src/libs/qmljs/jsoncheck.h

@@ -49,7 +49,7 @@ class QMLJS_EXPORT JsonCheck : public AST::Visitor
 {
 public:
     JsonCheck(Document::Ptr doc);
-    ~JsonCheck() QTC_OVERRIDE;
+    ~JsonCheck();
 
     QList<StaticAnalysis::Message> operator()(Utils::JsonSchema *schema);