message: now-rm: Don't show URL for incomplete deployments
  Fixes this:
  > The following deployment will be removed permanently:
  XXXXXXXXXXXXXXXXXXXXXXXX      21d ago
diff: @@ -81,7 +81,7 @@ function readConfirmation(matches) {
  const tbl = table(
  matches.map(depl => {
  const time = chalk.gray(ms(new Date() - depl.created) + ' ago')
  - const url = chalk.underline(`https://${depl.url}`)
  + const url = depl.url ? chalk.underline(`https://${depl.url}`) : ''
  return [depl.uid, url, time]
  }),
  {align: ['l', 'r', 'l'], hsep: ' '.repeat(6)}
  