Drop sysfsutils from default software package list [Closes: issue2240]

sysfsutils was reported to take 2.5 seconds during system
startup.  Also the package is maintained by the Debian QA Group
and isn't useful and relevant enough to justify being part of the
default software selection.

Thanks to PaulePanter for the hint on IRC.

diff --git a/packages b/packages
index c4b7806..72433b6 100644
--- a/packages
+++ b/packages
@@ -1,7 +1,7 @@
 locales console-data console-common
 initramfs-tools mdadm lvm2
 grub-pc os-prober
-bzip2 file less lsof most pciutils resolvconf screen ssh strace sysfsutils usbutils vim w3m zsh
+bzip2 file less lsof most pciutils resolvconf screen ssh strace usbutils vim w3m zsh
 rsync
 postfix
 lsb-release