update to use containerd seccomp package

Signed-off-by: Jess Frazelle <acidburn@microsoft.com>

vendor/github.com/opencontainers/image-spec/schema/gen.go

@@ -1,21 +0,0 @@
-// Copyright 2016 The Linux Foundation
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package schema
-
-// Generates an embbedded http.FileSystem for all schema files
-// using esc (https://github.com/mjibson/esc).
-
-// This should generally be invoked with `make schema-fs`
-//go:generate esc -private -pkg=schema -include=.*\.json$ .