Remove unnecessary setUp and resource_setup

This is to remove unnecessary setUp and resource_setup
to keep code clean.

Change-Id: I057847a7e184e9dacd77da6ac03aa4a44ddb2d0d
diff --git a/neutron/tests/tempest/api/base_security_groups.py b/neutron/tests/tempest/api/base_security_groups.py
index 8575ba9..5028ec1 100644
--- a/neutron/tests/tempest/api/base_security_groups.py
+++ b/neutron/tests/tempest/api/base_security_groups.py
@@ -20,10 +20,6 @@
 
 class BaseSecGroupTest(base.BaseNetworkTest):
 
-    @classmethod
-    def resource_setup(cls):
-        super(BaseSecGroupTest, cls).resource_setup()
-
     def _create_security_group(self, **kwargs):
         # Create a security group
         name = data_utils.rand_name('secgroup-')