Fix directive robot warning in the test suite

Error msg:
     Setting 'Suite Teardown' is allowed only once.
     Only the first value is used

Changes:
     - Remove duplicate Suite teardown directive

Tested:
    - NA

Change-Id: Ie9653e0951a8aa1b0a94411619de3224a71c7525
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/gui/gui_test/settings_menu/test_snmp_alerts_sub_menu.robot b/gui/gui_test/settings_menu/test_snmp_alerts_sub_menu.robot
index bb86061..3cddf73 100644
--- a/gui/gui_test/settings_menu/test_snmp_alerts_sub_menu.robot
+++ b/gui/gui_test/settings_menu/test_snmp_alerts_sub_menu.robot
@@ -8,7 +8,6 @@
 Resource        ../../lib/bmc_network_utils.robot
 
 Suite Setup     Suite Setup Execution
-Suite Teardown  Close Browser
 Suite Teardown  Run Keywords  Redfish.Logout  AND  Close Browser
 
 *** Variables ***
@@ -265,7 +264,7 @@
 Delete All SNMP Managers Via GUI
     [Documentation]  Delete SNMP manager via GUI.
 
-    Wait Until Page Contains Element  ${xpath_select_all_snmp}  timeout=30s 
+    Wait Until Page Contains Element  ${xpath_select_all_snmp}  timeout=30s
     Click Element At Coordinates  ${xpath_select_all_snmp}  0  0
     Wait Until Keyword Succeeds  30 sec  5 sec  Click Element  ${xpath_delete_button}
     Wait Until Page Contains  Delete SNMP alert destination