Bug 1559975 - remove dom/media/test from python3 linter exclusion list r=ahal

Differential Revision: https://phabricator.services.mozilla.com/D37124

--HG--
extra : moz-landing-system : lando

tools/lint/py3.yml

@@ -8,7 +8,6 @@ py3:
         - client.py
         - dom/bindings
         - dom/canvas/test
-        - dom/media/test
         - gfx
         - ipc/ipdl
         - layout/reftests