Remove duplicate 'name' entry on attachment creation.

issue2574
review340002

trytond/webdav/webdav.py

@@ -547,7 +547,6 @@ class Collection(ModelSQL, ModelView):
                 attachment_obj.create({
                     'name': name,
                     'data': data,
-                    'name': name,
                     'resource': '%s,%s' % (object_name, object_id),
                     })
             except Exception: