Use pytest-asyncio auto mode

tests/compute/docker/test_docker.py

@@ -16,7 +16,6 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import pytest
-import pytest_asyncio
 from unittest.mock import MagicMock, patch
 
 from tests.utils import asyncio_patch, AsyncioMagicMock
@@ -24,7 +23,7 @@ from gns3server.compute.docker import Docker, DOCKER_PREFERRED_API_VERSION, DOCK
 from gns3server.compute.docker.docker_error import DockerError, DockerHttp404Error
 
 
-@pytest_asyncio.fixture
+@pytest.fixture
 async def vm():
 
     vm = Docker()