Remove static strings and symbols
<rdar://problem/109287900>
Pull request: https://github.com/WebKit/WebKit/pull/13841
Committed 264265@main (39a1ff098a4e): <https://commits.webkit.org/264265@main> Reviewed commits have been landed. Closing PR #13841 and removing active labels.
Re-opened since this is blocked by bug 257174
Closing old bugs assigned to me