remove dependency on binascii

Author: justinemarie

bessctl/conf/testing/run_module_tests.bess

@@ -6,7 +6,6 @@ import socket
 import time
 import sugar
 import traceback
-import binascii #only consistent way python3/python2 to convert hex string to bytes
 from time import gmtime, strftime
 
 ## HANDY UTILS AND GLOBAL VARS ##