Remove unnecessary name definition

There already exists rand name in create function, so the
name definition before the create function is unnecessary.
This is to remove the redundant name definition for code clean.

Change-Id: Icdac63c6ac241f8ba2c65bcff4cafcc2354db4d8
diff --git a/tempest/api/compute/floating_ips/test_floating_ips_actions.py b/tempest/api/compute/floating_ips/test_floating_ips_actions.py
index 3508ba9..fdf1e93 100644
--- a/tempest/api/compute/floating_ips/test_floating_ips_actions.py
+++ b/tempest/api/compute/floating_ips/test_floating_ips_actions.py
@@ -14,7 +14,6 @@
 #    under the License.
 
 from tempest.api.compute.floating_ips import base
-from tempest.common.utils import data_utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib.common.utils import test_utils
@@ -112,8 +111,7 @@
         # positive test:Association of an already associated floating IP
         # to specific server should change the association of the Floating IP
         # Create server so as to use for Multiple association
-        new_name = data_utils.rand_name('floating_server')
-        body = self.create_test_server(name=new_name)
+        body = self.create_test_server()
         waiters.wait_for_server_status(self.servers_client,
                                        body['id'], 'ACTIVE')
         self.new_server_id = body['id']
diff --git a/tempest/api/compute/servers/test_server_group.py b/tempest/api/compute/servers/test_server_group.py
index e32f6b0..bc49e7b 100644
--- a/tempest/api/compute/servers/test_server_group.py
+++ b/tempest/api/compute/servers/test_server_group.py
@@ -19,12 +19,13 @@
 
 
 class ServerGroupTestJSON(base.BaseV2ComputeTest):
-    """These tests check for the server-group APIs
+    """These tests check for the server-group APIs.
 
     They create/delete server-groups with different policies.
     policies = affinity/anti-affinity
     It also adds the tests for list and get details of server-groups
     """
+
     @classmethod
     def skip_checks(cls):
         super(ServerGroupTestJSON, cls).skip_checks()
@@ -40,12 +41,10 @@
     @classmethod
     def resource_setup(cls):
         super(ServerGroupTestJSON, cls).resource_setup()
-        server_group_name = data_utils.rand_name('server-group')
         cls.policy = ['affinity']
 
         cls.created_server_group = cls.create_test_server_group(
-            server_group_name,
-            cls.policy)
+            policy=cls.policy)
 
     def _create_server_group(self, name, policy):
         # create the test server-group with given policy