Remove unused hasPerspective from TextBlob

Change-Id: I1ff1eaaac8faf99f3714fc023aefc9888ef5a20b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/651418
Reviewed-by: Robert Phillips <robertphillips@google.com>
Auto-Submit: Herb Derby <herb@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
2 files changed