simplify more

Author: eleanorjboyd

src/vs/workbench/services/notebook/common/notebookDocumentService.ts

@@ -77,17 +77,13 @@ export function extractCellOutputDetails(uri: URI): { notebook: URI; openIn: str
 		return;
 	}
 	const outputId = params.get('outputId') ?? undefined;
-	const notebookScheme = params.get('notebookScheme') ?? undefined;
 	const parsedCell = parse(uri.with({ scheme: Schemas.vscodeNotebookCell, query: null }));
 	const outputIndex = params.get('outputIndex') ? parseInt(params.get('outputIndex') || '', 10) : undefined;
 	const notebookUri = parsedCell ? parsedCell.notebook : uri.with({
-		scheme: notebookScheme || Schemas.file,
+		scheme: params.get('notebookScheme') || Schemas.file,
 		fragment: null,
 		query: null,
 	});
-	if (notebookUri === undefined) {
-		throw new Error('Invalid cell URI');
-	}
 
 	return {
 		notebook: notebookUri,