migrate to trio so c-lightning sockets stop hanging.

tests/conftest.py

@@ -4,7 +4,6 @@ from lnbits.app import create_app
 
 
 @pytest.fixture
-@pytest.mark.asyncio
 async def client():
     app = create_app()
     app.config["TESTING"] = True

tests/core/test_views.py

@@ -1,7 +1,6 @@
 import pytest
 
 
-@pytest.mark.asyncio
 async def test_homepage(client):
     r = await client.get("/")
     assert b"Add a new wallet" in await r.get_data()