system: remove LCOWSupported() utility

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

builder/dockerfile/dispatchers_test.go

@@ -116,7 +116,7 @@ func TestFromScratch(t *testing.T) {
 	}
 	err := initializeStage(sb, cmd)
 
-	if runtime.GOOS == "windows" && !system.LCOWSupported() {
+	if runtime.GOOS == "windows" {
 		assert.Check(t, is.Error(err, "Linux containers are not supported on this system"))
 		return
 	}

pkg/system/lcow_unsupported.go → pkg/system/image_os.go

@@ -4,11 +4,6 @@ import (
 	"strings"
 )
 
-// LCOWSupported returns true if Linux containers on Windows are supported.
-func LCOWSupported() bool {
-	return false
-}
-
 // IsOSSupported determines if an operating system is supported by the host.
 func IsOSSupported(os string) bool {
 	return strings.EqualFold(runtime.GOOS, os)