Another Python 2 remnant cleanup

src/allmydata/test/web/test_web.py

@@ -1,14 +1,8 @@
 """
-Ported to Python 3.
+Tests for a bunch of web-related APIs.
 """
-from __future__ import print_function
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import unicode_literals
+from __future__ import annotations
 
-from future.utils import PY2
-if PY2:
-    from future.builtins import filter, map, zip, ascii, chr, hex, input, next, oct, open, pow, round, super, bytes, dict, list, object, range, str, max, min  # noqa: F401
 from six import ensure_binary
 
 import os.path, re, time