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gogoy@ has indicated that non-refresh Google colors are no longer to be
used for Chrome OS. As such, remove them from the palette, and OS Settings.

Also, add a PRESUBMIT to prevent them from getting added back to OS Settings.

Bug: 1062154
Change-Id: I73465f867b5916bdd234a2a7c292038cd805f2a8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2100556Reviewed-by: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Commit-Queue: calamity <calamity@chromium.org>
Cr-Commit-Position: refs/heads/master@{#751934}