Module & Sub module grammar issue fix

Change-Id: Ia90b90510233195c5eab7402ebe790014ce137d1
diff --git a/utils/yangutils/src/test/java/org/onosproject/yangutils/parser/impl/listeners/MandatoryListenerTest.java b/utils/yangutils/src/test/java/org/onosproject/yangutils/parser/impl/listeners/MandatoryListenerTest.java
index c30dee5..05ee69a 100644
--- a/utils/yangutils/src/test/java/org/onosproject/yangutils/parser/impl/listeners/MandatoryListenerTest.java
+++ b/utils/yangutils/src/test/java/org/onosproject/yangutils/parser/impl/listeners/MandatoryListenerTest.java
@@ -150,8 +150,8 @@
         thrown.expect(ParserException.class);
         thrown.expectMessage("mismatched input 'mandatory' expecting {'augment', 'choice', 'contact', 'container',"
                 + " 'description', 'extension', 'deviation', 'feature', 'grouping', 'identity', 'import', 'include',"
-                + " 'leaf', 'leaf-list', 'list', 'namespace', 'notification', 'organization', 'prefix', 'reference',"
-                + " 'revision', 'rpc', 'typedef', 'uses', 'yang-version', '}'}");
+                + " 'leaf', 'leaf-list', 'list', 'notification', 'organization', 'reference',"
+                + " 'revision', 'rpc', 'typedef', 'uses', '}'}");
         YangNode node = manager.getDataModel("src/test/resources/ModuleSubStatementMandatory.yang");
     }
 }
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