Revert unnecessary change

Author: ansermino

src/message.rs

@@ -1,4 +1,5 @@
 use cid::Cid;
+use fvm_ipld_encoding::Error;
 use fvm_ipld_encoding::RawBytes;
 pub use fvm_shared::message::Message;
 use fvm_shared::{
@@ -12,7 +13,7 @@ use serde::{Deserialize, Serialize};
 
 fn from_cbor_blake2b256<S: serde::ser::Serialize>(
     obj: &S,
-) -> Result<Cid, fvm_ipld_encoding::Error> {
+) -> Result<Cid, Error> {
     let bytes = fvm_ipld_encoding::to_vec(obj)?;
     Ok(Cid::new_v1(
         fvm_ipld_encoding::DAG_CBOR,