Drop deprecated GRMLBASE/93-update-usbids (update-usbids is gone)

update-usbids is no longer available since usbutils v008,
quoting from https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=805330:

| version 008, usbutils doesn't use usb.ids anymore. Instead
| it uses the udev hardware database. usb.ids is now provided by the
| package with the same name, but it doesn't provide any script to update
| it.

Given that usbutils v1:010-3 is available in Debian oldoldstable AKA
buster, there's no point in further shipping our 93-update-usbids
script any longer.

debian/grml-live.maintscript

@@ -5,3 +5,4 @@ rm_conffile /etc/grml/fai/config/files/etc/lsb-base-logging.sh/GRMLBASE 0.42.3~
 rm_conffile /etc/grml/fai/config/files/etc/systemd/system/serial-getty@ttyS0.service.d/override.conf/GRMLBASE 0.33.2~
 rm_conffile /etc/grml/fai/config/scripts/GRMLBASE/36-cpufrequtils 0.33.0~
 rm_conffile /etc/grml/fai/config/scripts/GRMLBASE/40-deborphan 0.35.0~
+rm_conffile /etc/grml/fai/config/scripts/GRMLBASE/93-update-usbids 0.45.0~