How to delete specific hatches in file settings?

I’m making a template file and would like to delete specific hatches to keep my hatch library limited to the hatches I regularly use. I’ve done this for linetypes but hatches doesn’t offer a +/- function in Mac. Anyway around this that doesn’t involve the purge tool?

if you could find the default hatch pattern file and store it there, i did not find it yet though. an option to clean that up would be pretty helpful i agree but you still can create your own list and edit it with textedit, load it in and store it with the template, should work? not very intuitiv of course…