remove torch shadow in trainers tests (#69)

Author: maryamhonari

ml-agents/mlagents/trainers/tests/torch/__init__.py renamed to ml-agents/mlagents/trainers/tests/torch_entities/__init__.py

@@ -22,7 +22,7 @@
     POCASettings,
 )
 from mlagents.trainers.tests import mock_brain as mb
-from mlagents.trainers.tests.torch.test_policy import create_policy_mock
+from mlagents.trainers.tests.torch_entities.test_policy import create_policy_mock
 from mlagents.trainers.torch_entities.utils import ModelUtils
 
 

ml-agents/mlagents/trainers/tests/torch/saver/test_saver.py renamed to ml-agents/mlagents/trainers/tests/torch_entities/saver/test_saver.py

@@ -18,8 +18,8 @@
     SACSettings,
     POCASettings,
 )
-from mlagents.trainers.tests.torch.test_policy import create_policy_mock
-from mlagents.trainers.tests.torch.test_reward_providers.utils import (
+from mlagents.trainers.tests.torch_entities.test_policy import create_policy_mock
+from mlagents.trainers.tests.torch_entities.test_reward_providers.utils import (
     create_agent_buffer,
 )