Remove references to obsolete event_loop fixture

It's gone from the latest pytest-asyncio.

pyproject.toml

@@ -84,6 +84,7 @@ addopts = """
 --color=yes
 """
 # filterwarnings=error
+asyncio_default_fixture_loop_scope = "function"
 
 [tool.mypy]
 ignore_missing_imports = true

tests/conftest.py

@@ -59,12 +59,12 @@ else:
 
 
 @pytest_asyncio.fixture
-async def aio_session(event_loop):
+async def aio_session():
     async with aiohttp.ClientSession() as session:
         yield session
 
 
 @pytest_asyncio.fixture
-async def aio_connector(event_loop):
+async def aio_connector():
     async with aiohttp.TCPConnector(limit_per_host=16) as conn:
         yield conn

tests/unit/test_metasync.py

@@ -1,5 +1,7 @@
 from __future__ import annotations
 
+import asyncio
+
 import hypothesis.strategies as st
 import pytest
 import pytest_asyncio
@@ -56,23 +58,19 @@ async def test_basic(monkeypatch):
 
 
 @pytest_asyncio.fixture
-@pytest.mark.asyncio
-async def conflict_state(request, event_loop):
+async def conflict_state(request):
     a = MemoryStorage()
     b = MemoryStorage()
     status = {}
     await a.set_meta("foo", "bar")
     await b.set_meta("foo", "baz")
 
-    def cleanup():
     async def do_cleanup():
         assert await a.get_meta("foo") == "bar"
         assert await b.get_meta("foo") == "baz"
         assert not status
 
-        event_loop.run_until_complete(do_cleanup())
-
-    request.addfinalizer(cleanup)
+    request.addfinalizer(lambda: asyncio.run(do_cleanup()))
 
     return a, b, status