code: public EntityResult deleteEntity(String entityType, String uniqueAttributeName, String uniqueAttributeValue)
              throws AtlasServiceException {
          LOG.debug("Deleting entity type: {}, attributeName: {}, attributeValue: {}", entityType, uniqueAttributeName,
                  uniqueAttributeValue);
          API api = API.DELETE_ENTITY;
          WebResource resource = getResource(api);
          resource = resource.queryParam(TYPE, entityType);
          resource = resource.queryParam(ATTRIBUTE_NAME, uniqueAttributeName);
          resource = resource.queryParam(ATTRIBUTE_VALUE, uniqueAttributeValue);
          JSONObject jsonResponse = callAPIWithResource(API.DELETE_ENTITIES, resource);
          EntityResult results = extractEntityResult(jsonResponse);
          LOG.debug("Delete entities returned results: {}", results);
          return results;
      }
docs: Supports Deletion of an entity identified by its unique attribute value
  @param entityType Type of the entity being deleted
  @param uniqueAttributeName Attribute Name that uniquely identifies the entity
  @param uniqueAttributeValue Attribute Value that uniquely identifies the entity
  @return List of entity ids updated/deleted(including composite references from that entity)