It’s time to have an honest conversation. James Harden is careless with the basketball and is a shell of himself, and it seems no one is holding him accountable for his actions. Harden scored just four points as the Nets lost their sixth straight game, 112-101, this time to a Sacramento Kings team much closer to the bottom of the standings than the play-in tournament. The Kings snapped a seven-game losing streak at the expense of a Nets team that fancies itself a championship contender. At this point, that’s a laughable notion. The Nets have work to do, a roster to fix and players whose behind…