SkUserConfig.h: remove out-of-date comment on SK_SFNTLY_SUBSETTER

Change-Id: I6894fe43de071999e4923e1515a951b73e2ba0b1
Reviewed-on: https://skia-review.googlesource.com/7619
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
1 file changed