Update import robot lib and cyclic import of resource file

Changes:
    - Remove duplicate import
    - Remove resource import to avoid cyclic importing

Tested: - NA
Change-Id: I0f8b1598173fa46851039208ac8e5214fec5b344
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/redfish/account_service/test_ldap_configuration.robot b/redfish/account_service/test_ldap_configuration.robot
index f10678a..522bd09 100644
--- a/redfish/account_service/test_ldap_configuration.robot
+++ b/redfish/account_service/test_ldap_configuration.robot
@@ -2,11 +2,9 @@
 Documentation    Test Redfish LDAP user configuration.
 
 Library          ../../lib/gen_robot_valid.py
-Resource         ../../lib/resource.robot
 Resource         ../../lib/bmc_redfish_resource.robot
-Resource         ../../lib/openbmc_ffdc.robot
 Resource         ../../lib/utils.robot
-Library          ../../lib/gen_robot_valid.py
+Resource         ../../lib/openbmc_ffdc.robot
 Resource         ../../lib/bmc_network_utils.robot
 Resource         ../../lib/bmc_ldap_utils.robot