gallery: cleanup old code commented out

Change-Id: I314be395ba82b89f89d6b84702e17f3adcabf1b1
Reviewed-by: J-P Nurmi <jpnurmi@theqtcompany.com>

examples/quick/controls/gallery/content/ModelView.qml

@@ -40,7 +40,6 @@
 
 import QtQuick 2.2
 import QtQuick.Controls 1.2
-//import QtQuick.XmlListModel 2.1
 
 Item {
     id: root
@@ -49,16 +48,6 @@ Item {
     anchors.fill: parent
     anchors.margins: Qt.platform.os === "osx" ? 12 : 6
 
-//    XmlListModel {
-//        id: flickerModel
-//        source: "http://api.flickr.com/services/feeds/photos_public.gne?format=rss2&tags=" + "Cat"
-//        query: "/rss/channel/item"
-//        namespaceDeclarations: "declare namespace media=\"http://search.yahoo.com/mrss/\";"
-//        XmlRole { name: "title"; query: "title/string()" }
-//        XmlRole { name: "imagesource"; query: "media:thumbnail/@url/string()" }
-//        XmlRole { name: "credit"; query: "media:credit/string()" }
-//    }
-
     ListModel {
         id: dummyModel
         Component.onCompleted: {