Remove unnecessary GOOGLE3 ifdefs from SkRawCodec

These should be fine now that SkJpegCodec is building in GOOGLE3.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1718343002

Review URL: https://codereview.chromium.org/1718343002
1 file changed