Remove an environment variable.
Syntax
$ vela env unset <key> -t <target>$ vela env unset STRIPE_SECRET_KEY -t production
$ vela env unset WHATSAPP_MODE -t previewThe key is removed whether it was secret or public — you should not have to remember which. Removing one that isn’t set reports that there was nothing to remove rather than failing. As with set, the instances the layer reaches are restarted so the change takes effect, and the environment is asked for when -t is missing.