Syntax:  DELETE LANGUAGE language_name_wild

  Deletes the indicated language definition(s).

  LSE does not actually delete the tokens, placeholders, and aliases
  associated with the language, but it makes them unavailable for use.
  If you subsequently enter a NEW LANGUAGE command for the same
  language name, then LSE reassociates all of the previously defined
  tokens, placeholders, and aliases with the new language definition.
  Thus, you can use this command as a step in modifying the properties
  of a language definition.