cli: remove stray dbg!

Whoops, forgot to review my commits before pushing.

crates/cli/src/lib.rs

@@ -182,7 +182,6 @@ pub fn is_readable_stdin() -> bool {
  let file = File::from(fd);
  let Ok(md) = file.metadata() else { return false };
  let ft = md.file_type();
- dbg!(&ft);
  ft.is_file() || ft.is_fifo() || ft.is_socket()
  }