diff --git a/quantum/agent/linux/ovs_lib.py b/quantum/agent/linux/ovs_lib.py
index ab3412619c..0644544910 100644
--- a/quantum/agent/linux/ovs_lib.py
+++ b/quantum/agent/linux/ovs_lib.py
@@ -20,9 +20,6 @@
 
 import logging
 import re
-import shlex
-import signal
-import subprocess
 
 from quantum.agent.linux import utils