removed unused code around scaled generators

BUG=skia:

Change-Id: I9e042cd9343e0f29032f84ee17b4b316214ec693
Reviewed-on: https://skia-review.googlesource.com/8403
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Reviewed-by: Brian Osman <brianosman@google.com>
17 files changed