message: Remove extra required_override call from sites ignore logic
diff: @@ -203,7 +203,6 @@ fn build_ignore(target: &Target, directory: &Path) -> Result<Override, failure::
  // add any other excludes specified
  if let Some(excluded) = &site.exclude {
  - required_ignore(&mut required_override)?;
  for e in excluded {
  required_override.add(&format!("!{}", e))?;
  log::info!("Ignoring {}", e);
  