Delete vendor/ and the route proxy's: the build module fetches the modules, the root image builds with -mod=mod (issue 1305, C6)

vendor/github.com/klauspost/compress/s2/decode_asm.go

@@ -1,17 +0,0 @@
-// Copyright 2016 The Snappy-Go Authors. All rights reserved.
-// Copyright (c) 2019 Klaus Post. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build (amd64 || arm64) && !appengine && gc && !noasm
-// +build amd64 arm64
-// +build !appengine
-// +build gc
-// +build !noasm
-
-package s2
-
-// decode has the same semantics as in decode_other.go.
-//
-//go:noescape
-func s2Decode(dst, src []byte) int