By Daniel Bates When NBA players and coaches criticize the officiating in a public forum, they assuredly receive some mail from the league’s office in short order. And that’s exactly what Sixers star Joel Embiid received Monday. From the desk of the Association: Philadelphia 76ers center Joel Embiid has been fined $15,000 for public criticism of the officiating, … Embiid made his remarks to the media following the 76ers’ 110-102 loss to the Toronto Raptors in Game 4 of their first-round playoff series on April 23 at Scotiabank Arena. After Game 4, TNT’s cameras caught the All-NBA big man givin…