How to safely remove rest of GTP?

[Ngie Cooper]

*snort* I completely forgot I had scripted this back 1.5 years ago:
https://github.com/yaneurabeya/scratch/blob/master/bayonetta/scratch/scripts/freebsd/wipe-gpt-partitions.sh
. This basically napalms all of the blocks at the beginning and end
that count per GPT (and MBR as well).

If someone wants, I can check this into FreeBSD somewhere under tools...

Thanks,
-Ngie