scripts: Drop unused extract_initrd_uuid.sh script

Signed-off-by: Emanuele Aina <emanuele.aina@collabora.com>

scripts/extract_initrd_uuid.sh

-#!/bin/sh
-
-set -e
-
-mkdir -p uuid
-cd uuid
-
-prefix=
-
-if ls ../binary/casper/initrd.img-* > /dev/null 2>&1; then
-  prefix=../binary/boot/filesystem.dir/casper/
-else
-  prefix=../binary/boot/filesystem.dir/boot/
-fi
-
-UUID=`uuidgen -r`
-
-for initrd in `ls $prefix/initrd.img-* 2> /dev/null`; do
-  zcat $initrd | cpio --quiet -id
-  echo $UUID > conf/uuid.conf
-  find . | cpio --quiet --dereference -o -H newc | gzip > $initrd
-  rm -rf *
-done
-
-echo "I: setting rootfs UUID $UUID in initrd... copying to '.disk/casper-uuid'."
-if [ ! -d ../binary/boot/filesystem.dir/.disk ]; then
-    mkdir -p ../binary/boot/filesystem.dir/.disk
-fi
-echo $UUID > ../binary/boot/filesystem.dir/.disk/casper-uuid
-cd ..
-rm -rf uuid