Remove redfish login from lib/utils.robot code
Remove redfish login from lib/utils.robot code

Change-Id: Icfadcb4af058f2359b4d81060c85fa07fd35e91a
Signed-off-by: George Keishing <bef0a9ecac45fb57611777c8270153994e13fd2e@in.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation