remove superfluous and useless line
diff --git a/Lib/test/test_asyncio/test_unix_events.py b/Lib/test/test_asyncio/test_unix_events.py
index cc74383..744c319 100644
--- a/Lib/test/test_asyncio/test_unix_events.py
+++ b/Lib/test/test_asyncio/test_unix_events.py
@@ -1335,7 +1335,6 @@
with self.ignore_warnings:
self.watcher._sig_chld()
- callback.assert_called(m.waitpid)
if isinstance(self.watcher, asyncio.FastChildWatcher):
# here the FastChildWatche enters a deadlock
# (there is no way to prevent it)