While the guard condition was technically correct, it's not practical or necessary to provide this protection for every use of every filter, and it adds unnecessary burden to translators to provide translations for strings that will likely not be seen.
Follow up to [55254].
Fixes#57320
git-svn-id: https://develop.svn.wordpress.org/trunk@55406 602fd350-edb4-49c9-b593-d223f7449a82