Remove duplicate import

supervisor/medusa/thread/thread_handler.py

@@ -319,8 +319,6 @@ class request_loop_thread (threading.Thread):
 
 if __name__ == '__main__':
 
-    import sys
-
     if len(sys.argv) < 2:
         print 'Usage: %s <worker_threads>' % sys.argv[0]
     else: