Remove test code; stop importing namedtuple

Author: multimeric

rdflib/plugins/shared/jsonld/context.py

@@ -5,7 +5,6 @@
 # https://github.com/RDFLib/rdflib-jsonld/blob/feature/json-ld-1.1/rdflib_jsonld/context.py
 from __future__ import annotations
 
-from collections import namedtuple
 from collections.abc import Collection, Generator
 from typing import (
     TYPE_CHECKING,
@@ -717,5 +716,3 @@ class Term(NamedTuple):
     #: If true, marks the term as protected, meaning it cannot be overridden by a subcontext.
     #: See https://www.w3.org/TR/json-ld11/#protected-term-definitions
     protected: bool = False
-
-Context.terms