MT#62988 Drop cpufrequtils from software selection

Quoting from grml-live upstream:

| commit 61b77ff04fb60e09123a79b5f0ededbb6455add5
| Author: Michael Prokop <mika@grml.org>
| Date:   Thu Dec 13 12:08:01 2018 +0100
|
|     SW: drop deprecated cpufrequtils (+ drop scripts/GRMLBASE/36-cpufrequtils)
|
|     The cpufreq drivers are autoloaded and the powersave/ondemand driver
|     is mature enough. The linux-cpupower tools provide the binaries
|     as replacement for what cpufrequtils provided so far and we ship
|     them (with GRML_FULL) already.
|
|     Also see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877016
|
|     Thanks: Michael Biebl for the pointer
|     Closes: https://github.com/grml/grml/issues/51

Now that cpufrequtils no longer exists as of Debian/trixie and newer,
drop it accordingly in our deployment ISO.

Change-Id: I4373ef907824a844cdf8adf240fa3cc2f878a1cd

grml_build/package_config/SIPWISE

@@ -10,7 +10,6 @@ buffer
 chrony
 coreutils
 cpio
-cpufrequtils
 diffutils
 disktype
 dmsetup