What is the birth date of the player with the most assists during the 1985 All-Star season?
most assist refers to Max(assists); in 1985 All Star season refers to season_id = 1985
SELECT T1.birthDate FROM players AS T1 INNER JOIN player_allstar AS T2 ON T1.playerID = T2.playerID WHERE T2.season_id = 1985 ORDER BY T2.assists DESC LIMIT 1