By Dan Lyons Charles has filled in for Brittney Griner, who remains detained in Russia. As the look to stay afloat without star center Brittney Griner, former league MVP Tina Charles played a major role, averaging 17.3 points and 7.3 rebounds per game for the team in 2022. Now, after just 16 games, she is no longer with the franchise. “After discussions with Tina and her agent, it was best for both parties to go our separate ways at this time,” Phoenix GM Jim Pitman said in a statement released Saturday. “Due to circumstances both in and out of our control, our season has not gone according to…