Use dynamic package list as supported by latest live-build

config/package-lists/standard.list.chroot

@@ -1,43 +1 @@
-#! Packages Priority standard
-apt-listchanges
-at
-bash-completion
-bc
-bind9-host
-bsd-mailx
-bzip2
-dc
-dnsutils
-exim4
-exim4-base
-exim4-daemon-light
-file
-ftp
-host
-less
-locales
-lsof
-m4
-mime-support
-mlocate
-multiarch-support
-mutt
-ncurses-term
-nfs-common
-openssh-client
-patch
-pciutils
-perl
-perl-modules
-portmap
-procmail
-python
-reportbug
-rpcbind
-telnet
-texinfo
-time
-ucf
-w3m
-wamerican
-whois
+! Packages Priority standard