QUrlQuery: remove misleading comment

The 'itemList' is a QList and is not maintained in sorted order.

Change-Id: I8f221281803ff0e9caa054007bee3058214f2f30
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/corelib/io/qurlquery.cpp

@@ -169,7 +169,6 @@ public:
     Map::iterator findKey(const QString &key)
     { return itemList.begin() + findRecodedKey(recodeFromUser(key)); }
 
-    // use QMap so we end up sorting the items by key
     Map itemList;
     QChar valueDelimiter;
     QChar pairDelimiter;