windows: drop go version tags for unsupported versions
go.mod specifies go 1.18. Drop go1.n version tags for older, unsupported
versions.
Change-Id: I7a23a9f4ba558999ac417b7b4647fa1061d69c06
Reviewed-on: https://go-review.googlesource.com/c/sys/+/566038
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Quim Muntal <quimmuntal@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
diff --git a/windows/aliases.go b/windows/aliases.go
index ce2d713..16f9056 100644
--- a/windows/aliases.go
+++ b/windows/aliases.go
@@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
-//go:build windows && go1.9
+//go:build windows
package windows
diff --git a/windows/empty.s b/windows/empty.s
deleted file mode 100644
index ba64cac..0000000
--- a/windows/empty.s
+++ /dev/null
@@ -1,8 +0,0 @@
-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build !go1.12
-
-// This file is here to allow bodyless functions with go:linkname for Go 1.11
-// and earlier (see https://golang.org/issue/23311).
