Los Angeles (AFP) – A “Game of Thrones” sequel focused on the fan-favorite, impossible-to-kill character Jon Snow is in early development at HBO, according to Hollywood trade reports. Kit Harington — whose stoic warrior Snow was last seen banished from Westeros in the “Thrones” finale — is attached to star if the spin-off series goes ahead, the Hollywood Reporter and Variety said, citing anonymous sources. HBO declined to comment, and Harington’s representatives did not immediately respond to an AFP request for comment. If the show gets a green light, it would be the latest in a rapidly expa…