Remove redundant conductor from ServersTestBase.setUp()
Remove redundant conductor from ServersTestBase.setUp()

ServersTestBase.setUp() is starting a second conductor
service for no reason. Its parent class, _IntegratedTestBase,
already starts a conductor service and stores it as an instance
variable. So this change removes the redundant conductor service
from the setUp method.

Change-Id: If29587a22eb2e217bb9b6c93524c83bfff765e53

openstack/nova,rahulunair/nova,rahulunair/nova,klmitch/nova,mahak/nova,klmitch/nova,openstack/nova,rahulunair/nova,klmitch/nova,mahak/nova,mahak/nova,openstack/nova,klmitch/nova