By Matt Hladik Brooklyn Nets guard James Harden has been the subject of swirling trade rumors over the last week or so. There was even talk of a Harden-for-Ben Simmons swap. Despite these whispers, including word that Harden might be frustrated with his role in Brooklyn, Nets head coach Steve Nash put his foot down on Sunday. Nash told reporters that Harden will not be traded before the deadline on Thursday. Nash’s comments come one day after ESPN’s Adrian Wojnarowski reported that Nets superstar Kevin Durant does not want Harden to leave. It would make sense if Durant was doing work behind th…