Remove redundant imports

Signed-off-by: Joseph Livesey <jlivesey@gmail.com>

Author: suchapalaver

perf/sawtooth_perf/src/workload.rs

@@ -27,7 +27,6 @@ use std::sync::atomic::{AtomicUsize, Ordering};
 use std::time;
 use std::vec::IntoIter;
 
-use chrono;
 use futures::Future;
 use hyper::client::{Client, HttpConnector, Request, Response};
 use hyper::error::UriError;
@@ -36,7 +35,6 @@ use hyper::Error as HyperError;
 use hyper::Method;
 use hyper::StatusCode;
 use hyper::Uri;
-use protobuf;
 use protobuf::Message;
 use tokio_core::reactor::Handle;
 

perf/smallbank_workload/src/playlist.rs

@@ -40,7 +40,6 @@ use crate::protos::smallbank;
 use crate::protos::smallbank::SmallbankTransactionPayload;
 use crate::protos::smallbank::SmallbankTransactionPayload_PayloadType as SBPayloadType;
 
-use protobuf;
 use protobuf::Message;
 
 use sawtooth_sdk::messages::transaction::Transaction;

perf/smallbank_workload/src/smallbank_transformer.rs

@@ -23,7 +23,7 @@ use std::time::Instant;
 
 use crypto::digest::Digest;
 use crypto::sha2::Sha512;
-use protobuf;
+
 use protobuf::Message;
 
 use sawtooth_sdk::messages::transaction::{Transaction, TransactionHeader};