It was up 20 minutes and this article claims Trump deleted it himself:
https://www.theyeshivaworld.com/news/general/1830734/listen-to-it-trump-calls-bloomberg-a-total-racist-then-deletes-the-tweet-minutes-later.html
It may be a bit off message in terms of Trump’s appeal to black voters when he says a policy that he vocally supported was “racist”