Fixed Qt Designer template.

Change-Id: I62c019d339358755e56ef70386b79c3014bf00be
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>
Reviewed-by: Pasi Keränen <pasi.keranen@digia.com>

src/designer/default/Canvas3D.qml

@@ -42,6 +42,4 @@ Canvas3D {
     anchors.fill: parent
     logAllCalls: false
     logAllErrors: false
-    imageLoader: TextureImageLoader {
-    }
 }