remove unused func

Author: pjbull

tests/http_fixtures.py

@@ -1,7 +1,6 @@
 from datetime import datetime
 from functools import partial
 from http.server import HTTPServer, SimpleHTTPRequestHandler
-from io import BytesIO
 import os
 from pathlib import Path
 import shutil
@@ -47,9 +46,6 @@ def do_DELETE(self):
 
         self.end_headers()
 
-    def list_directory(self, path: str | os.PathLike[str]) -> BytesIO | None:
-        return super().list_directory(path)
-
 
 @fixture(scope="module")
 def http_server(tmp_path_factory, worker_id):