ATLAS-2643: Re-evaluate tag propagation when a relationship edge is deleted - fix UT

repository/src/main/java/org/apache/atlas/repository/store/graph/v1/DeleteHandlerV1.java

@@ -311,7 +311,7 @@ public abstract class DeleteHandlerV1 {
 
             // for relationship edges, inverse vertex's relationship attribute doesn't need to be updated.
             // only delete the reference relationship edge
-            if (isRelationshipEdge(edge)) {
+            if (GraphHelper.isRelationshipEdge(edge)) {
                 deleteEdge(edge, isInternalType);
 
                 AtlasVertex referencedVertex = entityRetriever.getReferencedEntityVertex(edge, relationshipDirection, entityVertex);