Fix import to load from `conftest.py`

tests/test_pubsub.py

@@ -4,9 +4,10 @@ from itertools import cycle
 import pytest
 import trio
 import tractor
-from tractor.testing import tractor_test
 from tractor.experimental import msgpub
 
+from conftest import tractor_test
+
 
 def test_type_checks():
 

tests/test_streaming.py

@@ -7,9 +7,10 @@ import platform
 
 import trio
 import tractor
-from tractor.testing import tractor_test
 import pytest
 
+from conftest import tractor_test
+
 
 def test_must_define_ctx():