There's no need for this and all the API accessors for this preference already no-op.
<rdar://problem/117880701>
Pull request: https://github.com/WebKit/WebKit/pull/19916
Committed 270156@main (72f76d95fd33): <https://commits.webkit.org/270156@main> Reviewed commits have been landed. Closing PR #19916 and removing active labels.