Nope, rode it three times last weekend. If you stop to think about it, it would be incredibly dumb on SDC's part to do away with TNT considering it is the largest and most intense Arrow Mine Train coaster in the world still in operation and it was also one of the last ones to be built. (1993) This is a staple attraction of the park that is perfect for its demographic. They also celebrated it having 1 million riders recently and the park also did some reconditioning to its signage and to the trains themselves last season.
Don't believe everything you see on the internet, as others already mentioned.