recovery image: remove broken cryptsetup

More parts are apparently needed to make this functional. Remove until
it can be tested/verified as functional.

See #566

Author: zdykstra

etc/zfsbootmenu/recovery.conf.d/recovery.conf

@@ -7,10 +7,6 @@ install_optional_items+=" /bin/mkfs.vfat /bin/mkfs.ext4 "
 # Boot manipulation
 install_optional_items+=" /bin/efibootmgr "
 
-# LUKS control
-install_optional_items+=" /bin/cryptsetup "
-add_drivers+=" dm-crypt "
-
 # Networking
 install_optional_items+=" /bin/ip /bin/curl /bin/dhclient /sbin/dhclient-script /bin/ssh "
 add_dracutmodules+=" kernel-network-modules qemu-net "