fixing test scenario workflow test

Change-Id: If2c2e1145c34c38ac50b77cf1220ffa22405e934
diff --git a/src/test/cord-api/Tests/WorkflowValidations/ATT_Workflow.robot b/src/test/cord-api/Tests/WorkflowValidations/ATT_Workflow.robot
index e2909fa..eea7150 100644
--- a/src/test/cord-api/Tests/WorkflowValidations/ATT_Workflow.robot
+++ b/src/test/cord-api/Tests/WorkflowValidations/ATT_Workflow.robot
@@ -104,7 +104,6 @@
     CORD Delete    /xosapi/v1/att-workflow-driver/attworkflowdriverwhitelistentries    ${whitelist_entry_id}
     Wait Until Keyword Succeeds    120s    5s    Validate Subscriber Status    ${onu_serial_no}    auth-failed
     Wait Until Keyword Succeeds    120s    5s    Validate Subscriber Service Chain    ${onu_serial_no}
-    Wait Until Keyword Succeeds    30s    5s    Validate ONU Device Status    ${onu_invalid_sn}    DISABLED
 
 *** Keywords ***
 Setup