Other packages already dropped compatibility with go1.12, so it should be safe to remove it for this package as well. Change-Id: Ieecc7cd06a0a4e69e8c1c09ef6fefe95d78ceb75 GitHub-Last-Rev: 1971e0309bdd31facbc60d70cd36a91f6a22f4b2 GitHub-Pull-Request: golang/crypto#239 Reviewed-on: https://go-review.googlesource.com/c/crypto/+/448239 Reviewed-by: Joedian Reid <joedian@google.com> Auto-Submit: Filippo Valsorda <filippo@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Filippo Valsorda <filippo@golang.org> Reviewed-by: Roland Shoemaker <roland@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>