catalog-backend: Remove catalogProcessor.handleError

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

.changeset/serious-mayflies-thank.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-catalog-backend': minor
+---
+
+**Breaking**: Removed optional `handleError()` from `CatalogProcessor`. This optional method is never called by the catalog processing engine and can therefore be removed.

plugins/catalog-backend/api-report.md

@@ -300,11 +300,6 @@ export type CatalogProcessor = {
     emit: CatalogProcessorEmit,
     cache: CatalogProcessorCache,
   ): Promise<Entity>;
-  handleError?(
-    error: Error,
-    location: LocationSpec,
-    emit: CatalogProcessorEmit,
-  ): Promise<void>;
 };
 
 // @public

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

@@ -116,20 +116,6 @@ export type CatalogProcessor = {
     emit: CatalogProcessorEmit,
     cache: CatalogProcessorCache,
   ): Promise<Entity>;
-
-  /**
-   * Handles an emitted error.
-   *
-   * @param error - The error
-   * @param location - The location where the error occurred
-   * @param emit - A sink for items resulting from this handling
-   * @returns Nothing
-   */
-  handleError?(
-    error: Error,
-    location: LocationSpec,
-    emit: CatalogProcessorEmit,
-  ): Promise<void>;
 };
 
 /**