Make cosmetic fixes to FastAPI + Redis example

examples/miniapps/fastapi-redis/fastapiredis/redis.py

@@ -10,4 +10,3 @@ async def init_redis_pool(host: str, password: str) -> AsyncIterator[Redis]:
     yield pool
     pool.close()
     await pool.wait_closed()
-

examples/miniapps/fastapi-redis/tests.py

@@ -1,25 +0,0 @@
-from unittest import mock
-
-import pytest
-from httpx import AsyncClient
-
-from fastapi_redis_example import app, container, Service
-
-
-@pytest.fixture
-def client(event_loop):
-    client = AsyncClient(app=app, base_url='http://test')
-    yield client
-    event_loop.run_until_complete(client.aclose())
-
-
-@pytest.mark.asyncio
-async def test_index(client):
-    service_mock = mock.AsyncMock(spec=Service)
-    service_mock.process.return_value = 'Foo'
-
-    with container.service.override(service_mock):
-        response = await client.get('/')
-
-    assert response.status_code == 200
-    assert response.json() == {'result': 'Foo'}