CL 402595 used notsha256 to prevent the compiler from depending on
cgo-based implementations of sha1 and sha256.
However, since CL 454836, cmd is built with CGO_ENABLED=0, which
will disable boringcrypto. Thus all usages of notsha256 is not necessary
anymore.
Updates #51940
Updates #64751
Change-Id: I503090f7a2efb5723e8a79523b143dc7cdb4edd0
Reviewed-on: https://go-review.googlesource.com/c/go/+/610596
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Keith Randall <khr@golang.org>