message: [cli] Remove beta warning for `vercel build`
  This removes the `(beta)` output from `vercel build` as we move towards stability.
  ![image](https://user-images.githubusercontent.com/9113740/174356399-65f3d6bb-a241-49c8-9edb-167b25d6fa44.png)
diff: @@ -172,7 +172,8 @@ const main = async () => {
  // * a subcommand (as in: `vercel ls`)
  const targetOrSubcommand = argv._[2];
  - const betaCommands: string[] = ['build'];
  + // Currently no beta commands - add here as needed
  + const betaCommands: string[] = [''];
  if (betaCommands.includes(targetOrSubcommand)) {
  console.log(
  `${chalk.grey(
  