Remove empty SkOpts files (crc32, sse42)

Bug: skia:13983
Change-Id: Ie4de8f8a92cb2c204ac807f4eabdd78311acac00
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/702837
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
7 files changed