code: def _logout(creds_file=None):
      
      if _remove_creds(creds_file=creds_file):
          click.echo("Successfully removed One Codex credentials.", err=True)
          sys.exit(0)
      else:
          click.echo("No One Codex API keys found.", err=True)
          sys.exit(1)
docs: Logout main function, just rm ~/.onecodex more or less