MediaPlayerPrivateAVFoundationObjC::paintWithImageGenerator is an unused function
<rdar://problem/116231020>
Pull request: https://github.com/WebKit/WebKit/pull/18406
Committed 268648@main (c879b942c9a2): <https://commits.webkit.org/268648@main> Reviewed commits have been landed. Closing PR #18406 and removing active labels.