catalog-backend: Remove entityRef from CatalogProcessorRelationResult

Signed-off-by: Johan Haals <johan.haals@gmail.com>

.changeset/real-kids-hide.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-catalog-backend': minor
+---
+
+**Breaking**: Removed `entityRef` from `CatalogProcessorRelationResult`. The field is not used by the catalog and relation information is already available inside the `reation` property.

plugins/catalog-backend/src/ingestion/processors/types.ts

@@ -193,7 +193,6 @@ export type CatalogProcessorEntityResult = {
 export type CatalogProcessorRelationResult = {
   type: 'relation';
   relation: EntityRelationSpec;
-  entityRef?: string;
 };
 
 /** @public */