maint: update tests to use async/await

Author: consideRatio

batchspawner/tests/conftest.py

@@ -1,10 +1,4 @@
 """Relevant pytest fixtures are re-used from JupyterHub's test suite"""
 
-# We only use "db" and "io_loop", but we also need event_loop which is used by
-# io_loop to be available with jupyterhub 1+.
-from jupyterhub.tests.conftest import db, io_loop  # noqa
-
-try:
-    from jupyterhub.tests.conftest import event_loop  # noqa
-except:
-    pass
+# We use "db" directly, but we also need event_loop
+from jupyterhub.tests.conftest import db, event_loop  # noqa