[Cocoa] Remove workaround in Font::platformWidthForGlyph()
Created attachment 406892 [details] Patch
This probably needs PLATFORM guards, as those radars aren't fixed on every OS. It's a little scary no tests failed....
Also, this isn't for any particular bug, so I should probably hold off on committing it.
<rdar://problem/67839262>
Solving this in https://bugs.webkit.org/show_bug.cgi?id=215670 instead. *** This bug has been marked as a duplicate of bug 215670 ***