message: Removing len from types/src/write_set.rs
  Closes:
  Approved by: davidiw
diff: @@ -47,11 +47,6 @@ impl std::fmt::Debug for WriteOp {
  pub struct WriteSet(WriteSetMut);
  impl WriteSet {
  - #[inline]
  - pub fn len(&self) -> usize {
  - self.0.len()
  - }
  -
  #[inline]
  pub fn is_empty(&self) -> bool {
  self.0.is_empty()
  @@ -85,11 +80,6 @@ impl WriteSetMut {
  self.write_set.push(item);
  }
  - #[inline]
  - pub fn len(&self) -> usize {
  - self.write_set.len()
  - }
  -
  #[inline]
  pub fn is_empty(&self) -> bool {
  self.write_set.is_empty()
  