Google knows about, and can easily ignore, links from DMOZ clones.
In the early days of Webmaster Tools the external link report appeared to be 3 seperate reports merged together. There were a bunch of links ordered alphabetically, then another bunch again in alphabetical order, and then a final list of links.
That 3rd set of links were all from DMOZ clones. I think they were worthless back then and can't believe they would be harmful now.