Remove component from server

Hi,
I've developed a couple of feature including 3-4 plugin, I've create an update site, and then I've provide these plugin to the server using provisioning file and repotools -addTables command.
Now I'd like to update this plugins with new versions and I've tried to copy the new update site on the old one and launch repotools again but it seems not work correctly. So I've removed provision file and run repotools in order to delete all the plugins. But I still watch them on my server (they are all behaviour plugin).
What do I have to do to removing plugin or update them??
Thanks.
I've developed a couple of feature including 3-4 plugin, I've create an update site, and then I've provide these plugin to the server using provisioning file and repotools -addTables command.
Now I'd like to update this plugins with new versions and I've tried to copy the new update site on the old one and launch repotools again but it seems not work correctly. So I've removed provision file and run repotools in order to delete all the plugins. But I still watch them on my server (they are all behaviour plugin).
What do I have to do to removing plugin or update them??
Thanks.