delete.sh removes both related and unrelated ClusterServingRuntime instances

[muratyarali]

According to the linked documentation, delete.sh can remove ModelMesh Serving CRDs, the controller, and built-in runtimes from specified Kubernetes namespaces:

https://github.com/kserve/modelmesh-serving/blob/release-0.11/docs/install/install-script.md

However, when I run the following command, it deletes all ClusterServingRuntime instances:

./scripts/delete.sh --namespace modelmesh-serving

I intend to use ModelMesh-Serving in a Kubernetes cluster that Kubeflow deployed, so deleting unrelated ClusterServingRuntime instances disrupts the entire cluster.

I tested this with ModelMesh-Serving versions 0.11.0 and 0.12.0. The results are the same.