code: def unlock(self):
          
          self.init()
          r = self.local_renderer
          if self.file_exists(r.env.lockfile_path):
              self.vprint('Unlocking %s.' % r.env.lockfile_path)
              r.run_or_local('rm -f {lockfile_path}')
docs: Unmarks the remote server as currently being deployed to.