Remove the "cat" language

[Gil Forcada <gforcada gnome org>]

Hi,

While importing mousetrap a previous Catalan translation was submitted
with it that used a wrong language code (cat instead of ca). I've
already fixed in GNOME's subversion but it still shows up in:
http://l10n.gnome.org/languages/

There's any way to make it disappear? :)

Cheers,

-- 
gil forcada

[ca] guifi.net - una xarxa lliure que no para de créixer
[en] guifi.net - a non-stopping free network
bloc: http://gil.badall.net