ksbuilder unpublish does not remove extensionVersion

[luqiaoshi]

Pre:
1.ksbuilder version: v0.4.7
2.The extension component version has been manually published to the cluster repository

Step:

1. Execute the command:
   ksbuilder unpublish wiztelemetry-bpfconductor-1.0.4.tgz
2. Go to the KSE Console and check the supported versions of the extension component.

Actual：
The corresponding ExtensionVersion is not removed.

root@host-node1:~# kubectl get extensionversion
NAME                              AGE
wiztelemetry-bpfconductor-1.0.1   12d
wiztelemetry-bpfconductor-1.0.2   12d
wiztelemetry-bpfconductor-1.0.3   12d
wiztelemetry-bpfconductor-1.0.4   7m54s

[frezes]

It's not a bug.

ksbuilder unpublish wiztelemetry-bpfconductor