docs: remove all deprecated @stable jsdoc tags (#23210)

These are no longer needed as stable docs are computed as those that
do not have `@experimental` or `@deprecated` tags.

PR Close #23210

packages/core/testing/src/async_fallback.ts

@@ -29,7 +29,7 @@ const _global = <any>(typeof window === 'undefined' ? global : window);
  * });
  * ```
  *
- * @stable
+ *
  */
 export function asyncFallback(fn: Function): (done: any) => any {
   // If we're running using the Jasmine test framework, adapt to call the 'done'