gpart destroy efi partition?

From: Steve Kargl <sgk_at_troutmask.apl.washington.edu>
Date: Tue, 23 May 2023 03:44:53 UTC 
Is there a secret incantation for destroying an EFI
partition on a USB memstick?  After installing FreeBSD,
I would like to re-use a memstick, but

% gpart destroy da0
gpart: geom 'da0': Read-only file system
% gpart destroy -F da0
gpart: geom 'da0': Read-only file system
% gpart show da0
=>      40  60063664  da0  GPT  (29G)
        40  60063664    1  ms-basic-data  (29G)
% gpart delete -i 1 da0
gpart: geom 'da0': Read-only file system
% dd if=/dev/zero of=/dev/da0 bs=1m
dd: /dev/da0: Read-only file system

-- 
Steve