Bug#573252: partman-target: stray /cdrom link useless these days

[Frans Pop <elendil@planet.nl>]

tag 573252 pending
thanks

On Thursday 11 March 2010, Frans Pop wrote:
> On Wednesday 10 March 2010, maximilian attems wrote:
> > applications that still rely on a toplevel /cdrom
> > are likely very buggy and should be kicked.
> >
> > nuke etch compatibility link.
>
> Except that D-I itself still uses it :-/

Well, the only usage left were some no longer needed umount statements, so 
I've simply cleaned those up as well.

Committed in SVN.

Cheers,
FJP