docs(test-runners): remove AVA section

as it is outdated and does not match the style of this document.

Author: hasezoey

docs/guides/integration-examples/test-runners.md

@@ -135,14 +135,6 @@ describe('...', () => {
 });
 ```
 
-## AVA test runner
-
-For AVA there is a [detailed written tutorial](https://github.com/zellwk/ava/blob/8b7ccba1d80258b272ae7cae6ba4967cd1c13030/docs/recipes/endpoint-testing-with-mongoose.md) on how to test mongoose models with mongodb-memory-server by [@zellwk](https://github.com/zellwk).
-
-:::note
-Note that this tutorial is pre mongodb-memory-server 7.x.
-:::
-
 ## vitest
 
 <span class="badge badge--secondary">vitest version 3</span>