Anyone have a working disklayout_lvm for ubuntu to disable swap partition?

I've got high density servers just running containers with 256 gigs of ram
and i don't like the default partition of 256gig swap being generated but i
can't seem to get it to stop.

I've done a custom layout like

d-i partman-auto/expert_recipe string
boot-root ::
40 300 300 ext3
$primary{ } $bootable{ }
method{ format } format{ }
use_filesystem{ } filesystem{ ext4 }
mountpoint{ /boot }
.
4000 7500 -1 ext4
method{ format } format{ } $lvmok{ }
use_filesystem{ } filesystem{ ext4 }
mountpoint{ / }
.

but still seeing it generated

partman choose recipe is set t boot-root as well.