prerm is in gcin-voice 0~20140513-1.
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 17 18 | #!/bin/sh
set -e
case "$1" in
    remove|deconfigure)
	update-alternatives --remove gcin-voice /usr/share/gcin-voice/ogg
	update-alternatives --remove hime-voice /usr/share/gcin-voice/ogg
	;;
    upgrade|failed-upgrade)
	;;
    *)
	echo "prerm called with unknown argument \`$1'" >&2
	exit 1
esac
exit 0
 |