Remove RTAdjust plumbing

Change-Id: I935784aae438ac767cca03eb25853f4230297bb5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/318214
Auto-Submit: Brian Osman <brianosman@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
6 files changed