Can you remove old HCM system extract definitions?

Summary:

We are looking to clean up some of our historic extract definitions. Can anyone share what they do/ best practices along with any impacts of doing so?

i.e can they locked or be deleted? we cannot seem to find an option for this?

Content (required):

See example screen capture, we are trying to avoid old versions showing on the UI/dropdown when searching the flows.

Version (include the version you are using, if applicable):

23C

Code Snippet (add any code snippets that support your topic, if applicable):