65272: Revert testing changes

src/app/core/data/item-template-data.service.ts

@@ -21,6 +21,7 @@ import { switchMap } from 'rxjs/operators';
 
 /* tslint:disable:max-classes-per-file */
 class DataServiceImpl extends ItemDataService {
+  protected linkPath = 'itemtemplate';
 
   private collectionID: string;
 
@@ -39,9 +40,19 @@ class DataServiceImpl extends ItemDataService {
     super(requestService, rdbService, dataBuildService, store, bs, objectCache, halService, notificationsService, http, comparator);
   }
 
+  protected getEndpoint(): Observable<string> {
+    return this.collectionService.getIDHrefObs(this.collectionID).pipe(
+      switchMap((href: string) => this.halService.getEndpoint(this.linkPath, href))
+    );
+  }
+
+  getIDHrefObs(resourceID: string): Observable<string> {
+    return this.getEndpoint();
+  }
+
   findByCollectionID(collectionID: string): Observable<RemoteData<Item>> {
     this.collectionID = collectionID;
-    return super.findById('961e137c-d815-4ade-aff1-0bb12f1fe965');
+    return super.findById(collectionID);
   }
 
   create(item: Item, collectionID: string): Observable<RemoteData<Item>> {