Remove SkPaint::kGenA8FromLCD_Flag.

The original intent of this flag is now handled by SkPixelGeomety on
SkSurfaceProps on SkSurface.

BUG=skia:7515

Change-Id: I54bb1be072b5b5b2164a59196bfeacac254823c7
Reviewed-on: https://skia-review.googlesource.com/121346
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
21 files changed