Remove RAW Codec from Google3 build.

This should fix the build after https://codereview.chromium.org/1520403003 and allow the autoroller to complete. I will follow up to see if it will be simple to re-enable this codec.
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1628393002

Review URL: https://codereview.chromium.org/1628393002
1 file changed