diff --git a/run_chain.py b/run_chain.py
index ba27def9..22273df1 100755
--- a/run_chain.py
+++ b/run_chain.py
@@ -3,11 +3,7 @@
 
 from datetime import datetime, timedelta
 import pytz
-
 import logging
-import os
-import sys
-import time
 import shutil
 import argparse