remove SK_SUPPORT_LEGACY_TYPEFACE_MAKEFROMSTREAM

... now that Brian updated Flutter's callsites

Bug: skia:8350
Change-Id: I5ae72700125e09d84392eee8045c9602f718909a
Reviewed-on: https://skia-review.googlesource.com/153901
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Mike Reed <reed@google.com>
3 files changed