Revert workaround for not optional django.test.utils.setup_databases()'s time_keeper.

pytest_django/compat.py

@@ -1,39 +1,12 @@
 # This file cannot be imported from until Django sets up
-
-
-def _get_setup_and_teardown_databases():
-    try:
-        # Django 3.2+ has added timing capabilities that we don't really support
-        # right now. Unfortunately that new time_keeper is required.
-        from django.test.utils import NullTimeKeeper
-    except ImportError:
-        pass
-    else:
-        from django.test.utils import setup_databases, teardown_databases
-
-        def wrapped_setup_databases(*args, **kwargs):
-            return setup_databases(*args, time_keeper=NullTimeKeeper(), **kwargs)
-
-        return wrapped_setup_databases, teardown_databases
-
-    try:
-        # Django 1.11+
-        from django.test.utils import setup_databases, teardown_databases  # noqa: F401, F811
-    except ImportError:
-        pass
-    else:
-        return setup_databases, teardown_databases
-
+try:
+    # Django 1.11+
+    from django.test.utils import setup_databases, teardown_databases  # noqa: F401, F811
+except ImportError:
     # In Django prior to 1.11, teardown_databases is only available as a method on DiscoverRunner
     from django.test.runner import setup_databases, DiscoverRunner  # noqa: F401, F811
 
     def teardown_databases(db_cfg, verbosity):
         DiscoverRunner(verbosity=verbosity, interactive=False).teardown_databases(
             db_cfg
         )
-
-    return setup_databases, teardown_databases
-
-
-setup_databases, teardown_databases = _get_setup_and_teardown_databases()
-del _get_setup_and_teardown_databases