[Users] otopi needed on oVirt node?

Hello, comparing rpm packages installed on two f18 systems that are nodes of a 3.2 cluster, I notice this difference:

otopi-1.0.0-1.fc18.noarch ovirt-host-deploy-1.0.1-1.fc18.noarch

I think ovirt-host-deploy is not necessary and that I can remove from the only node where it is installed. What about otopi? Thanks, Gianluca