NEW YORK — There was no pregame tribute video for Kyrie Irving in his first game back in Brooklyn like the one Kevin Durant received last week. Instead, the Nets issued a brief, grouped-together “welcome back” to Irving, Seth Curry and Markieff Morris as their Dallas Mavericks visited Barclays Center on Tuesday. That was invitation enough for Nets fans to boo their former superstar. A still-filling-in crowd jeered Irving as he took the court to warm up, then grew louder when the “welcome back” message emerged on the jumbotron. Fans grew louder yet during Irving’s introduction as a Mavericks st…
