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Do any of your or anyone reading have any first hand experience with removing dates?

I have a web site that has content about home improvement topics but the site has no new content since 2010.  All the posts on the wordpress site have the date which are all 2010 and prior.  Is there a downside in terms of search engine rankings to remove the dates or changing the dates?  What are the risks to removing the dates?  Could I lose rankings if I do this?  Do you have any personal experience with this situation?