prerm is in nautilus-hide 0.1.3-1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16  | #!/bin/sh
set -e
NOTIF_PATH=/var/lib/update-notifier/user.d/nautilus-hide-restart
case "$1" in
	remove)
	if [ -e $NOTIF_PATH ]; then
		rm -f $NOTIF_PATH
	fi
	;;
esac
exit 0
 |