One of the world’s most iconic rock bands is retiring from touring after 54 years. Aerosmith has cancelled its “Peace Out” farewell tour, citing lead singer Steven Tyler’s difficult recovery from a fractured larynx in 2023. “Steven’s voice is an instrument like no other. He has spent months tirelessly working on getting his voice to where it was before his injury,” Aerosmith posted to its official website Friday. “We’ve seen him struggling despite having the best medical team by his side. Sadly, it is clear, that a full recovery from his vocal injury is not possible. We have made a heartbreaki…