update to use containerd seccomp package

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

vendor/github.com/opencontainers/image-spec/.tool/check-license

@@ -1,16 +0,0 @@
-#!/usr/bin/env bash
-
-set -o errexit
-set -o nounset
-set -o pipefail
-
-ret=0
-
-for file in $(find . -type f -iname '*.go' ! -path './vendor/*'); do
-	if ! head -n3 "${file}" | grep -Eq "(Copyright|generated|GENERATED)"; then
-		echo "${file}:missing license header"
-		ret=1
-	fi
-done
-
-exit $ret