It has no callers and calls simplifyWhiteSpace(), which we don't like.
<rdar://problem/109660821>
Pull request: https://github.com/WebKit/WebKit/pull/14180
Committed 264331@main (4de497ecb697): <https://commits.webkit.org/264331@main> Reviewed commits have been landed. Closing PR #14180 and removing active labels.