Remove unused QTKit preference
Created attachment 331989 [details] Patch
https://trac.webkit.org/changeset/227437/webkit But it broke the High Sierra build, so I rolled it out in https://trac.webkit.org/changeset/227442/webkit The High Sierra build was broken even after that, so I think it might have just been an incremental build problem of some sort.
I verified locally it builds on High Sierra...
https://trac.webkit.org/changeset/227535/webkit
<rdar://problem/36835687>