Well, this doesn’t track.The Metropolitan Transportation Authority claims it has pushed social media companies to take down viral videos of subway surfers — but it can’t say how many clips have actually been removed.The authority said it has flagged more than 10,900 social media posts showing the boneheaded and sometimes deadly trend since last June, but it’s not clear how many actually ended up deleted or if anyone — including the social media companies — is even tracking those numbers.The news comes about a week after MTA Chair and CEO Janno Lieber reported that social media companies are being “mostly compliant” in taking down dangerous content.“We’re always checking every day to make sure they do take them down, and that they don’t get out,” MTA CEO and Chair Janno Lieber said at a press conference last week.Though Lieber claimed that the companies have been “mostly compliant,” when The Post requested data, an MTA spokesperson said none was available and referred a reporter to the social media giants.The spokesperson said officials use a database to track the surfing videos and said employees follow up with the companies to see if they’ve been removed, even though the rep said the agency has no figures on whether the posts ever end up deleted.The social media companies themselves wouldn’t share figures — and it’s not clear they keep track of them at all.Facebook and Instagram parent company Meta said it had no figures to share.Neither did TikTok, while Snapchat didn’t respond to multiple requests for comment.“Videos involving subway surfing can be violations of our Coordinating Harm and Promoting Crime policy,” a Meta rep said, noting that Meta removes content depicting, promoting, advocating for or encouraging participation in a high-risk viral challenge “except in the context of awareness raising or condemnation.”“We also continue to engage with the NY MTA in removing violating subway surfing content and informi...