Drop version off tails filename

roles/netbootxyz/templates/menu/live-tails.ipxe.j2

@@ -34,7 +34,7 @@ imgfree
 kernel ${kernel_url}vmlinuz boot=live fromiso=/tails.iso config nopersistence noprompt timezone=Etc/UTC splash noautologin module=Tails slab_nomerge slub_debug=FZP mce=0 vsyscall=none page_poison=1 init_on_free=1 mds=full,nosmt {{ kernel_params }}
 initrd ${kernel_url}initrd.img
 initrd ${kernel_url}9990-misc-helpers.sh /usr/lib/live/boot/9990-misc-helpers.sh
-initrd ${kernel_url}tails-${os_arch}-${iso_version}.iso /tails.iso
+initrd ${kernel_url}tails-${os_arch}.iso /tails.iso
 boot
 
 :tails_exit