Remove reference to skcms_internal.h

This file is no longer in use and will be removed in a followup.
(It has been replaced by src/skcms_internals.h)

Change-Id: I35bc8adbf00b4f7ad41eaddf0f59e7b41d250546
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/775836
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
2 files changed