get rid of unused include

Change-Id: I4a93050696b5c474c3accf27f570664939b49552
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/308196
Reviewed-by: Stan Iliev <stani@google.com>
Commit-Queue: Jorge Betancourt <jmbetancourt@google.com>
1 file changed