Remove unused CONF and LOG

There are some unused CONF and LOG in testcases,
this is to remove them for code clean.

Change-Id: Ic71abaef87ac7de1e6470ca7e6685acd899a9e0c
diff --git a/tempest/api/compute/admin/test_agents.py b/tempest/api/compute/admin/test_agents.py
index 40cb523..1c37cad 100644
--- a/tempest/api/compute/admin/test_agents.py
+++ b/tempest/api/compute/admin/test_agents.py
@@ -12,14 +12,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from oslo_log import log
-
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import test
 
-LOG = log.getLogger(__name__)
-
 
 class AgentsAdminTestJSON(base.BaseV2ComputeAdminTest):
     """Tests Agents API"""
diff --git a/tempest/api/compute/images/test_images_oneserver.py b/tempest/api/compute/images/test_images_oneserver.py
index 19e2880..0b4a2a8 100644
--- a/tempest/api/compute/images/test_images_oneserver.py
+++ b/tempest/api/compute/images/test_images_oneserver.py
@@ -13,8 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from oslo_log import log as logging
-
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest.common import waiters
@@ -23,7 +21,6 @@
 from tempest import test
 
 CONF = config.CONF
-LOG = logging.getLogger(__name__)
 
 
 class ImagesOneServerTestJSON(base.BaseV2ComputeTest):
diff --git a/tempest/api/compute/volumes/test_volumes_list.py b/tempest/api/compute/volumes/test_volumes_list.py
index e4e625b..82cc653 100644
--- a/tempest/api/compute/volumes/test_volumes_list.py
+++ b/tempest/api/compute/volumes/test_volumes_list.py
@@ -13,14 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from oslo_log import log as logging
-
 from tempest.api.compute import base
 from tempest import config
 from tempest import test
 
 CONF = config.CONF
-LOG = logging.getLogger(__name__)
 
 
 class VolumesTestJSON(base.BaseV2ComputeTest):
diff --git a/tempest/api/volume/admin/test_volumes_actions.py b/tempest/api/volume/admin/test_volumes_actions.py
index 261e652..fdffc49 100644
--- a/tempest/api/volume/admin/test_volumes_actions.py
+++ b/tempest/api/volume/admin/test_volumes_actions.py
@@ -14,11 +14,8 @@
 #    under the License.
 
 from tempest.api.volume import base
-from tempest import config
 from tempest import test
 
-CONF = config.CONF
-
 
 class VolumesActionsV2Test(base.BaseVolumeAdminTest):