contrib/initrd: remove obsolete ORDER file

lipck generates a prober ORDER file on the fly. Hence, the static
file is not required (and it had the disadvantage that it may not
match the initrd version)

contrib/initrd/initrd_hook/ORDER

-/scripts/casper-bottom/01integrity_check
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/05mountpoints
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/05mountpoints_lupin
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/07remove_oem_config
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/10custom_installation
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/10ntfs_3g
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/12fstab
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/13swap
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/14locales
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/15autologin
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/16gdmnopasswd
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/18hostname
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/19keyboard
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/20xconfig
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/22desktop_settings
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/22sslcert
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/23networking
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/24liphook
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/24preseed
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/25adduser
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/25configure_init
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/26serialtty
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/26mopsmops
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/30accessibility
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/31disable_update_notifier
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/32disable_hibernation
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/33enable_apport_crashes
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/34disable_kde_services
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/35fix_language_selector
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/36disable_trackerd
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/40install_driver_updates
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/41apt_cdrom
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/43disable_updateinitramfs
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/44pk_allow_ubuntu
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/45jackd2
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/48kubuntu_disable_restart_notifications
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/49kubuntu_mobile_session
-[ -e /conf/param.conf ] && . /conf/param.conf
-/scripts/casper-bottom/50ubiquity-bluetooth-agent
-[ -e /conf/param.conf ] && . /conf/param.conf