windows: remove workaround for go#15286 and have compiling work on windows

Signed-off-by: Tibor Vass <tibor@docker.com>

cmd/docker/docker_autogen_windows.go

@@ -0,0 +1,8 @@
+// +build autogen,windows
+
+package main
+
+// TODO: add build scripts that include the winresources (for docker icon etc.)
+// Those scripts will need to specify an autogen buildtag.
+
+import _ "github.com/docker/cli/autogen/winresources"

cmd/docker/docker_windows.go

@@ -1,18 +0,0 @@
-package main
-
-import (
-	"sync/atomic"
-
-	_ "github.com/docker/cli/autogen/winresources"
-)
-
-//go:cgo_import_dynamic main.dummy CommandLineToArgvW%2 "shell32.dll"
-
-var dummy uintptr
-
-func init() {
-	// Ensure that this import is not removed by the linker. This is used to
-	// ensure that shell32.dll is loaded by the system loader, preventing
-	// go#15286 from triggering on Nano Server TP5.
-	atomic.LoadUintptr(&dummy)
-}