Remove gogoproto.stdtime

This commit removes gogoproto.stdtime, since it is not supported by
Google's official toolchain
(see https://github.com/containerd/containerd/issues/6564).

Signed-off-by: Kazuyoshi Kato <katokazu@amazon.com>

runtime/v2/binary.go

@@ -28,6 +28,7 @@ import (
 
 	"github.com/containerd/containerd/log"
 	"github.com/containerd/containerd/namespaces"
+	"github.com/containerd/containerd/protobuf"
 	"github.com/containerd/containerd/runtime"
 	client "github.com/containerd/containerd/runtime/v2/shim"
 	"github.com/containerd/containerd/runtime/v2/task"
@@ -192,7 +193,7 @@ func (b *binary) Delete(ctx context.Context) (*runtime.Exit, error) {
 	}
 	return &runtime.Exit{
 		Status:    response.ExitStatus,
-		Timestamp: response.ExitedAt,
+		Timestamp: protobuf.FromTimestamp(response.ExitedAt),
 		Pid:       response.Pid,
 	}, nil
 }