Fix network issue

 reason:
   deleteing bmc ip address instead of test ip address

 Change:
   Added delete ip address after reboot

Change-Id: I4a44e3ce318c0f7faee5d732038f102e21add418
Signed-off-by: Anves Kumar rayankula <anvesr77@in.ibm.com>
diff --git a/redfish/managers/test_bmc_network_conf.robot b/redfish/managers/test_bmc_network_conf.robot
index 4231042..c51a1f1 100644
--- a/redfish/managers/test_bmc_network_conf.robot
+++ b/redfish/managers/test_bmc_network_conf.robot
@@ -171,8 +171,6 @@
 Add Valid IPv4 Address And Check Persistency
     [Documentation]  Add IPv4 address and check peristency.
     [Tags]  Add_Valid_IPv4_Addres_And_Check_Persistency
-    [Teardown]  Run Keywords
-    ...  Delete IP Address  ${test_ipv4_addr}  AND  Test Teardown Execution
 
     Add IP Address  ${test_ipv4_addr}  ${test_subnet_mask}  ${test_gateway}
 
@@ -180,6 +178,7 @@
     OBMC Reboot (off)
     Redfish.Login
     Verify IP On BMC  ${test_ipv4_addr}
+    Delete IP Address  ${test_ipv4_addr}
 
 Add Fourth Octet Threshold IP And Verify
     [Documentation]  Add fourth octet threshold IP and verify.