Followup 41a4b3fb: use .not()

I claimed that it didn't preserve text nodes, but it does. It's just
that there's a bug where it doesn't preserve text nodes if the selector
passed to it is too simple, but 'link, meta, style' is complex enough
to avoid triggering this bug.

Change-Id: Id4a60dc87b8d4c613bc7013641b116dd7c331ac1
Merge "Followup 41a4b3fb: use .not()"