Remove the CACHE_SANITY_CHECK system.

This was never test and turned on. I tried this a month ago
before the large changes, and it was failing then. I don't think
this tells us anything interesting, and fails if the blob is reused.

Change-Id: I8aadc2be7e6a17d255d681ed9fab04dcbc538991
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/258809
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Herb Derby <herb@google.com>
3 files changed