[skif] Delete legacy SkColorFilterImageFilter impl

Bug: skia:9283
Bug: b/263133769
Change-Id: If17b853ae29c1e578a6fb1a8eea56ed96cb0457a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/699580
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
1 file changed