fix: remove temporary TD context URI

Author: JKRhb

lib/src/definitions/extensions/json_parser.dart

@@ -26,7 +26,6 @@ import "../version_info.dart";
 const _validTdContextValues = [
   "https://www.w3.org/2019/wot/td/v1",
   "https://www.w3.org/2022/wot/td/v1.1",
-  "http://www.w3.org/ns/td",
 ];
 
 /// Extension for parsing fields of JSON objects.