Drop large zeroing cases, part of removing duff support.
Change-Id: Ia2936f649901886f3eb1d7ba1f90e3bf40ea2dee
Reviewed-on: https://go-review.googlesource.com/c/go/+/697615 Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Julian Zhu <jz531210@gmail.com> Reviewed-by: Mark Ryan <markdryan@rivosinc.com> Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Mark Freeman <markfreeman@google.com> Reviewed-by: Joel Sing <joel@sing.id.au>