Can't delete hatches from list

First time ever I am trying to delete certain types of hatches from menu list through options panel.
Once they chosen, deleted, okeyed they reappear while trying to hatch something else.

Hello - yeah, there are some defaults that are always there.

-Pascal

I meant non-standard hatches inherited from other files or software.
I know the basic Rhino selection of hatches.

If they are unused, the Purge command should clear them.