Remove a registries
A Buildpack Registry is a (still experimental) place to publish, store, and discover buildpacks. Users can remove registries from the config by using pack config registries remove <registry>
pack config registries remove [flags]
pack config registries remove myregistry
  -h, --help   help for remove
      --force-color   Force color output
      --no-color      Disable color output
  -q, --quiet         Show less output
      --timestamps    Enable timestamps in output
  -v, --verbose       Show more output