Fixed review comments

repository/src/main/java/org/apache/atlas/discovery/graph/DefaultGraphPersistenceStrategy.java

@@ -97,7 +97,6 @@ public class DefaultGraphPersistenceStrategy implements GraphPersistenceStrategi
     }
 
     @Override
-    @GraphTransaction
     public Id getIdFromVertex(String dataTypeName, TitanVertex vertex) {
         return metadataRepository.getIdFromVertex(dataTypeName, vertex);
     }

repository/src/main/java/org/apache/atlas/repository/graph/GraphBackedMetadataRepository.java

@@ -938,7 +938,6 @@ public class GraphBackedMetadataRepository implements MetadataRepository {
 
     public final class GraphToTypedInstanceMapper {
 
-        @GraphTransaction
         public ITypedReferenceableInstance mapGraphToTypedInstance(String guid,
                                                                    Vertex instanceVertex)
             throws MetadataException {
@@ -973,7 +972,6 @@ public class GraphBackedMetadataRepository implements MetadataRepository {
             }
         }
 
-        @GraphTransaction
         public void mapVertexToInstance(Vertex instanceVertex, ITypedInstance typedInstance,
                                         Map<String, AttributeInfo> fields)
         throws MetadataException {