libcontainerd: remove unused consts

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

libcontainerd/remote/client_windows.go

@@ -16,11 +16,6 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-const (
-	runtimeName       = "io.containerd.runhcs.v1"
-	shimV2RuntimeName = runtimeName
-)
-
 func summaryFromInterface(i interface{}) (*libcontainerdtypes.Summary, error) {
 	switch pd := i.(type) {
 	case *options.ProcessDetails: