Moved delete all user to suite teardown

With this change, deletion of all users is done at the end of suite
instead of each testcase. This reduces the total suite execution time.

Also delete all users takes time to complete and it was resulting
in inconsistent failures in consecutive test cases. So moving delete
all user at the end, eliminates such failures.

Change-Id: I3ac77fd3ef0cbf0d25fb442e824b3b19066b6b40
Signed-off-by: Rahul Maheshwari <rahulmaheshwari@in.ibm.com>
diff --git a/ipmi/test_ipmi_user.robot b/ipmi/test_ipmi_user.robot
index 3ec74ff..2e70eb3 100644
--- a/ipmi/test_ipmi_user.robot
+++ b/ipmi/test_ipmi_user.robot
@@ -6,7 +6,7 @@
 Library             ../lib/ipmi_utils.py
 
 Test Teardown       Test Teardown Execution
-
+Suite Teardown      Delete All Non Root IPMI User
 
 *** Variables ***
 
@@ -434,4 +434,3 @@
     [Documentation]  Do the test teardown execution.
 
     FFDC On Test Case Fail
-    Delete All Non Root IPMI User