[Xfce-i18n] How can I remove a project component from the list?

[Pjotr]

OK, there appears to be some misunderstanding. Perhaps I haven't
explained clearly enough what I mean. What I want to do, is shown by
the arrow on this screenshot:
http://sites.google.com/site/computertip/schermafdruk

In words: move one item from "Project/Component Statistics" to
"Untranslated Components".

And of course I only want to do this on the Dutch (Flemish) page. :-)