Remove skcms_Set|RestoreTarget.h.

These would only have been useful if we planned on changing
architecture via #pragma.

Change-Id: I418365afdb845aa6bfd5757513d3c5c646210e4b
Bug: b/310927123
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/777042
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
4 files changed