fix pyflakes error in process_email.py. Commit ready for merge

 - Legacy-Id: 8944

Author: rpcross

ietf/ipr/management/commands/process_email.py

@@ -22,6 +22,6 @@ def handle(self, *args, **options):
             msg = open(email, "r").read()
 
         try:
-            message = process_response_email(msg)
+            process_response_email(msg)
         except ValueError as e:
             raise CommandError(e)