[InterNetNews/inn] 294b98: Remove support/indent as we no longer need it

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: 294b98f958c703155883944fc80dd28bb4ee8e52
      https://github.com/InterNetNews/inn/commit/294b98f958c703155883944fc80dd28bb4ee8e52
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2021-12-19 (Sun, 19 Dec 2021)

  Changed paths:
    M MANIFEST
    M doc/pod/hacking.pod
    R support/indent

  Log Message:
  -----------
  Remove support/indent as we no longer need it

We've switched to clang-format and Black.  (And probably soon to
perltidy and shfmt.)