Remove reference to production_redirector_cdn
Remove reference to production_redirector_cdn

I think this is a bug in GitHub's merging.

The jobs were sorted in a463ec3f971b20de784f5ca219ec291aa34046a3 which
was merged to master. 1504da3516972235a46f1fb26f36e842ef560718 was created
from master before a463ec3f971b20de784f5ca219ec291aa34046a3 was merged,
so it was removing the job from the unsorted version.

But in the merge commit (9b479868ce6cc1279ab0d0599772197b69604cfa)
that removal disappears.

???

alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet