inittab: remove shutdown actions

Noticed that when testing, things were running again on poweroff.

Maybe we should just do the right thing and check for the start stop argument?

But who cares about the shutdown of stateless VMs, I'd rather just get it done ASAP.

rootfs_overlay/etc/inittab

@@ -9,6 +9,3 @@
 # Same as above: console is the default.
 #console::respawn:-/bin/sh
 ::ctrlaltdel:/sbin/reboot
-::shutdown:/etc/init.d/rcK
-::shutdown:/sbin/swapoff -a
-::shutdown:/bin/umount -a -r