Florian Wirtz scored a brace as Bayer Leverkusen trounced Fortuna Düsseldorf 4-0 on Wednesday to reach the German Cup final in the latest step to finally rid themselves of their Neverkusen image. The derby between the runaway Bundesliga leaders and the top flight promotion hopefuls from 20 kilometres down the River Rhine was over as a contest in the first half as treble chasing Leverkusen stretched their unbeaten run all season to 40 games. Jeremie Frimpong fired the opener into the roof of the net in the seventh minute, and Amine Adli doubled the lead 13 minutes later into the far right corne…