Remove unnecessary wait_for_server_status
Remove unnecessary wait_for_server_status

In ServerRescueTestJSON's resource_setup, wait_for_server_status
is not needed, instead, create_test_server(wait_until='ACTIVE')
should be used.
This is left over in I9487ddf6db8fda5b5fe6aa3f8787b56b8c865cf5

Change-Id: Ibafa745097fa12f5e6d061640009bc5b935ae52a

openstack/tempest,openstack/tempest,Juniper/tempest,vedujoshi/tempest,masayukig/tempest,masayukig/tempest,vedujoshi/tempest,cisco-openstack/tempest,Juniper/tempest,cisco-openstack/tempest