CurlDownload was removed. So the download-related code in CurlRequest is no longer needed.
Pull request: https://github.com/WebKit/WebKit/pull/14576
Committed 264779@main (3d96d2e0cc60): <https://commits.webkit.org/264779@main> Reviewed commits have been landed. Closing PR #14576 and removing active labels.
<rdar://problem/110098903>