git submodule delete

Hi,

I recently started working with submodule using git.
It's working great however I've been missing a git submodule delete commands to get rid of submodule I don't want in my project anymore.
Is there any reason why there is no such command (over no one has done it yet) ?
Is there another simple way to remove a submodule?

If not, I'll make (at least try) to make the necessary patches.

Nicolas