Retire SkNoSaveLayerCanvas

No clients, superseded by SkNoDrawCanvas.

R=reed@google.com

Change-Id: I93352c6cfb24ec133ed8433c3b31a5fa5ab1ace8
Reviewed-on: https://skia-review.googlesource.com/5460
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Mike Reed <reed@google.com>
4 files changed