We have no big-O packaged yet.

--- zipp-3.23.0/pyproject.toml.orig
+++ zipp-3.23.0/pyproject.toml
@@ -38,7 +38,6 @@
 	"jaraco.itertools",
 	"jaraco.functools",
 	"more_itertools",
-	"big-O",
 	"pytest-ignore-flaky",
 	"jaraco.test",
 ]