Facebook owner Meta Platforms is set to fully unwind its acquisition of Chinese-founded artificial intelligence platform Manus, more than three months after Beijing blocked the deal on national security grounds, capping off another high-profile decoupling between the US and China in the critical area of AI.On Tuesday, Manus wrote in a note to users that it would delete data by “certain users” generated on or after December 29, when Meta acquired the start-up, as part of the company’s transition back to independent operations.Affected users were asked to back up their data from now until August 23, while unaffected users may…