message: Remove unused Span::range_todo method
diff: @@ -14,16 +14,6 @@ impl Span {
  pub const fn fixme() -> Span {
  Span::Empty
  }
  -
  - pub fn range_todo(self) {
  - // placeholder function for when we should build a span from a ByteRange
  - // but the current location is expecting a range of (). Eventually this
  - // should be renamed range and return Option<ByteRange>?
  - // match self {
  - // Span::Range(range) => Some(range),
  - // Span::Empty => None
  - // }
  - }
  }
  impl From<&ByteRange> for Span {
  