remove legacy google3 flag

Bug: skia:
Change-Id: I9110f65e696a0c91c43954927dc05194797bf18c
Reviewed-on: https://skia-review.googlesource.com/152960
Reviewed-by: Mike Reed <reed@google.com>
diff --git a/public.bzl b/public.bzl
index e87b957..82502b4 100644
--- a/public.bzl
+++ b/public.bzl
@@ -608,8 +608,6 @@
         "SK_JUMPER_DISABLE_8BIT",
         # JPEG is in codec_limited
         "SK_HAS_JPEG_LIBRARY",
-        # remove once we've fixed call-sites
-        "SK_SUPPORT_LEGACY_TYPEFACE_MAKEFROMSTREAM",
     ] + skia_select(
         os_conditions,
         [