Remove debug checks for unsupported ICC profiles

This was never fully integrated with our automated image testing.
I feel it has limited usefulness in terms of catching bugs.

Bug: skia:
Change-Id: Iecd0a4e9b664ab0b351debde45ada864379de7ec
Reviewed-on: https://skia-review.googlesource.com/19267
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>
5 files changed