Remove unused import

Author: tkleinke

desktop/src/app/components/resources/view/view-facade.ts

@@ -1,5 +1,5 @@
-import { ChangesStream, Datastore, DatastoreErrors, Document, FieldDocument, IndexFacade,
-    SyncService, SyncStatus } from 'idai-field-core';
+import { ChangesStream, Datastore, Document, FieldDocument, IndexFacade, SyncService,
+    SyncStatus } from 'idai-field-core';
 import { M } from '../../../components/messages/m';
 import { Messages } from '../../../components/messages/messages';
 import { Loading } from '../../../components/widgets/loading';