Remove API compatibility layer for VS Code notebook extensions (#21225)

extensions/notebook/src/test/model/kernel.test.ts

@@ -98,9 +98,6 @@ describe('Jupyter Session', function (): void {
 		// When I request execute
 		let future = kernel.requestExecute({
 			code: code,
-			cellIndex: 0,
-			cellUri: undefined,
-			notebookUri: undefined,
 			language: ''
 		}, true);