Use small trick to let cdebootstrap recognize kali as wheezy

It's cleaner than the hook and avoid other errors with more
recent live-build versions.

auto/build

@@ -6,4 +6,6 @@
 # /usr/share/live/build/functions/releases.sh)
 export RELEASE_kali="7.0"
 
+export CDEBOOTSTRAP_OPTIONS="--suite-config wheezy"
+
 lb build noauto "$@" 2>&1 | tee binary.log

auto/config

@@ -7,7 +7,7 @@ export LB_BOOTSTRAP_INCLUDE=initramfs-tools
 
 lb config noauto \
 	--distribution "kali" \
-	--parent-distribution "wheezy" \
+	--parent-distribution "kali" \
 	--debian-installer-distribution "kali" \
 	--parent-debian-installer-distribution "wheezy" \
 	--archive-areas "main contrib non-free" \

config/hooks/workaround-live-build-limitation.chroot

@@ -1,5 +0,0 @@
-#!/bin/sh
-
-# somehow we need to replace wheezy with kali
-sed -i -e 's/wheezy/kali/g' /etc/apt/sources.list
-