Remove staging API for SkImage::makeWithFilter

Chrome migration landed in CL 2335640

Bug: skia:104662
Change-Id: I787d7f469ff474bec1e7e2803cdd492e18821a6e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/308191
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Adlai Holler <adlai@google.com>
Auto-Submit: Adlai Holler <adlai@google.com>
2 files changed