Added code to clean SNMP manager.

Signed-off-by: Prashanth Katti <prkatti1@in.ibm.com>
Change-Id: I7c55fad8f5be9cc56519c5c63296bb00bf256f96
diff --git a/snmp/test_bmc_snmp_config.robot b/snmp/test_bmc_snmp_config.robot
index 6a81337..b4dbab7 100644
--- a/snmp/test_bmc_snmp_config.robot
+++ b/snmp/test_bmc_snmp_config.robot
@@ -123,6 +123,7 @@
     BMC Execute Command  /tmp/tarball/bin/logging-test -c AutoTestSimple
     SSHLibrary.Switch Connection  snmp_server
     ${SNMP_LISTEN_OUT}=  Read  delay=1s
+    Delete SNMP Manager And Object  ${SNMP_MGR1_IP}  ${SNMP_DEFAULT_PORT}
     SSHLibrary.Execute Command  sudo killall snmptrapd
 
     Should Contain  ${SNMP_LISTEN_OUT}  ${SNMP_TRAP_BMC_ERROR}