crypto/subtle: remove unused code
Change-Id: I4e360e643d101a8f2188a2318557b0430a89d5cd
GitHub-Last-Rev:
046943ff482ff8e5665a50f62fcb63fa3bcf868e
GitHub-Pull-Request: golang/go#65747
Reviewed-on: https://go-review.googlesource.com/c/go/+/564736
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Than McIntosh <thanm@google.com>