twine is not needed to run tests.

--- async_timeout-5.0.1/requirements.txt.orig
+++ async_timeout-5.0.1/requirements.txt
@@ -4,4 +4,3 @@
 mypy==1.13.0; implementation_name=="cpython"
 pytest==8.3.3
 pytest-asyncio==0.24.0
-twine==5.1.1