acpi-support script missing in rc.d

I've just had a look inside the directories /etc/init.d and /etc/rc.d . I have a 13.10 machine, upgraded from 13.04.

Then I saw that this link was missing.

S99acpi-support -> ../init.d/acpi-support

What is this script suppposed to do?

Maybe it was migrated to another location?

I have other files with similar names on this machine. None of them seems to be a shell script. Should I get it from elsewhere, e.g. from the default repos? Alternatively, should I just remove the invalid links?

locate /acpi-support
/etc/default/acpi-support
/usr/share/acpi-support
/usr/share/acpi-support/state-funcs
/usr/share/doc/acpi-support
/usr/share/doc/acpi-support/README
/usr/share/doc/acpi-support/changelog.gz
/usr/share/doc/acpi-support/copyright
/var/lib/acpi-support
/var/lib/dpkg/info/acpi-support.conffiles
/var/lib/dpkg/info/acpi-support.list
/var/lib/dpkg/info/acpi-support.md5sums
/var/lib/dpkg/info/acpi-support.postinst
/var/lib/dpkg/info/acpi-support.preinst