By Tzvi Machlin One of the most iconic voices in wrestling history, AEW commentator Jim Ross, has been out of action for nearly a month while undergoing treatment for skin cancer. But he had a big announcement today. Taking to Twitter on Wednesday, Ross announced that he is officially cancer-free. Better yet: He’s ready to get back to work, starting with tonight’s episode of AEW Dynamite. “I’m CANCER FREE! We did it! See you tonight on [AEW Dynamite] at 8 ET!” Ross tweeted. He added a photo of his recently healed leg to show the fruits of his treatment. Wrestling fans were absolutely delighted…