Russell Simmons is set for a multimillion court battle with his ex-wife over his energy drink company. RadarOnline.com can reveal a trial date has been set for the blockbuster lawsuit to unfold, which was launched by Simmons, 67, against Kimora Lee, 49, and her ex Tim Leissner. The parties have been fighting in court for years over shares in energy drink company Celsius. Simmons and Lee were married from 1998 until 2009, while Lee married Leissner in 2014 but the two became estranged during his legal issues. Leissner, a former Goldman Sachs investment banker, was caught up in a scandal called …