Remove Legacy Istio References

There are several references to the following code:

http://localhost:15020/quitquitquit

The above was only necessary in Kubernetes 1.28 and older legacy versions of istio that did not support native side cars. Since Kubernetes 1.29 native sidecars are enabled by default and this functionality has also been the default for Istio for over a year now so those calls are no longer needed.

These calls will also make a future migration to Ambient more painful so they should be removed.