Remove SK_IGNORE_LINEAR_METRICS_FIX.

No users are defining this macro any more, so it should now be safe to
remove. With this change 'linearMetrics' now means 'normal metrics' if
false and 'unhinted metrics' if true.

Change-Id: I32916a7b0fc291feff7ab8cd6d68bb58847337f4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/213135
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
2 files changed