Doubt for removing dir

Hi,

I'm very confused for removing dir on gconf. My app has this situation:

/apps/myapp/options/option1
/apps/myapp/options/option2
/apps/myapp/options/option3
.......

to remove 'options' dir I make:
client->unset(/apps/myapp/options/option1)
client->unset(/apps/myapp/options/option2)
client->unset(/apps/myapp/options/option3)
.......
client->suggest_sync

but if I launch gconf-editor or:

$> ls .gconf/apps/myapp/

'options' dir is there again...

Have you any idea?

Thanks,
Giulio