Anakin is already a Knight at the start of "Clone Wars" the movie which is why the Council assigns him Ahsoka as a Padawan. He also has his scar that he received in the micro-series, which IIRC he received after his trials. I'm guessing that the Jedi Trials are just going to be one of those things we don't see, and just hear about. Almost mythical like tests that Jedi Padawan's take before being granted full Knightship. I don't mind not seeing them.