message: this hasher is not needed as the real hasher is in blob_storage/mod.rs
diff: @@ -77,17 +77,13 @@ pub fn store_tails_from_generator(service: Rc<BlobStorageService>,
  rtg: &mut RevocationTailsGenerator) -> Result<(String, String), CommonError> {
  debug!("store_tails_from_generator >>> writer_handle: {:?}",writer_handle);
  - let mut hasher = sha2::Sha256::default();
  -
  - let blob_handle = service.create_blob(writer_handle, hasher)?;
  + let blob_handle = service.create_blob(writer_handle)?;
  let version = vec![0u8, TAILS_BLOB_TAG_SZ];
  - hasher.process(version.as_slice());
  service.append(blob_handle, version.as_slice())?;
  while let Some(tail) = rtg.next()? {
  let tail_bytes = tail.to_bytes()?;
  - hasher.process(tail_bytes.as_slice());
  service.append(blob_handle, tail_bytes.as_slice())?;
  }
  