remove old comment and attribute

Reviewed By: farnz

Differential Revision: D21245424

fbshipit-source-id: a58d1f451341f374734b4518a2ed465a60809f0b

eden/mononoke/hgproto/src/dechunker.rs

@@ -55,9 +55,7 @@ where
         }
     }
 
-    #[allow(dead_code)]
     pub fn with_full_content(mut self, full_bundle2_content: Arc<Mutex<Bytes>>) -> Self {
-        // TODO(ikostia): make this used in commands.rs and remove the attribute above
         self.maybe_full_content = Some(full_bundle2_content);
         self
     }