Selected answers from the Dumb SEO Questions G+ community.
Harsh Singh: How to remove bad reviews from Google search ?
Nebojsa Djukic: Try to provide quality products and services in the future ;)
Brett Saltalamacchia: I don't think you can, a report feature is available but I have had no luck with that. Best thing to do is to focus on getting positive reviews in order to make those negative ones useless.