SIENTIAPDE-1094

Refactor test imports and remove unused test files

tests/activities/test_activities.py

@@ -1,10 +1,10 @@
 from unittest.mock import patch, MagicMock, ANY
+from pytest import mark
+from sientia_do.temporal.activities.postgres import Postgres
 from scouter.activities.activities import Activities
-from scouter.activities.postgres import Postgres
 from scouter.activities.redis import Redis
 from scouter.activities.kafka import Kafka
 from scouter.activities.gates import Gates
-from pytest import mark
 
 
 @patch('scouter.activities.activities.Postgres.__init__')