cargo fmt

rustfmt was updated with 1.26.1

src/replicate_stage.rs

@@ -4,8 +4,8 @@ use bank::Bank;
 use ledger;
 use packet;
 use result::Result;
-use std::sync::Arc;
 use std::sync::atomic::{AtomicBool, Ordering};
+use std::sync::Arc;
 use std::thread::{spawn, JoinHandle};
 use std::time::Duration;
 use streamer;