The issue you have reported is fixed in cPanel version 70 with the following case:
Fixed case CPANEL-16786: Fixed reported Clamd version in Service Status.
In cPanel version 68, the following command will solve the issue:
mv /root/.cpanel/datastore/_bin_rpm /root/.cpanel/datastore/_bin_rpm-old
A separate case, CPANEL-17105, is open to address an issue where uninstalling the ClamAV plugin fails to remove it's entry from "WHM >> Server Status". I'll update this thread once a resolution for that case is published.