test_policy: Fix pyflakes issue

5 jobs for master in 9 minutes and 57 seconds (queued for 3 seconds)
latest
Status Job ID Name Coverage
  Test
passed #338649
pep8

00:01:45

passed #338650
test

00:08:47

passed #338648
typing

00:03:34

 
  Deploy
passed #338651
pages

00:01:08

passed pages:deploy

00:00:01