Remove use of deprecated rprint functions

For each of the rprint functions, there is a corresponding gen_print function
that can be used instead.

Change-Id: I89c6e0b63cac7aee92da7dc7945e413001287967
Signed-off-by: Michael Walsh <micwalsh@us.ibm.com>
diff --git a/redfish/service_root/test_service_root_security.robot b/redfish/service_root/test_service_root_security.robot
index a2090c6..9262aaf 100644
--- a/redfish/service_root/test_service_root_security.robot
+++ b/redfish/service_root/test_service_root_security.robot
@@ -6,7 +6,7 @@
 Resource         ../../lib/openbmc_ffdc.robot
 
 Test Teardown    FFDC On Test Case Fail
-Test Setup       Rprintn
+Test Setup       Printn
 
 *** Variables ***