Aerosmith says frontman Steven Tyler’s voice has been permanently damaged by a vocal cord injury last year and that the band will no longer tour. The four-time Grammy winning band behind hits like ‘Dream On’, ‘Walk This Way’ and ‘Love in an Elevator’ posted a statement announcing the cancellation of remaining dates on its tour and provided an update on Tyler’s voice. “He has spent months tirelessly working on getting his voice to where it was before his injury. 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 in…