remove unused params

BUG=skia:6366

Change-Id: I0cfb8e4a969dc018339047183176fb242e455ab8
NOTRY=True
Reviewed-on: https://skia-review.googlesource.com/9869
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
1 file changed