remove cloned repo, not entire '___' dir

[jwerle]

This PR ensures a cloned repo is removed, not the entire targets/repos/___ directory. This happens when I list multiple repos in the [repos] section of zz.toml. Note that both repos do not export a modules/ directory, but rather the source of a single module.

[aep]

lgtm, but i'm very sleepy (baby).

can i trust you tested this with the other cases?

[jwerle]

sleep on it! I am testing now with a large project and can confirm tomorrow

[jwerle]

I can confirm no errors on my end

[aep]

thank you