Fix dependencies

vendor/golang.org/x/net/ipv6/icmp_zos.go

@@ -1,29 +0,0 @@
-// Copyright 2020 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package ipv6
-
-func (f *icmpv6Filter) accept(typ ICMPType) {
-	f.Filt[typ>>5] |= 1 << (uint32(typ) & 31)
-
-}
-
-func (f *icmpv6Filter) block(typ ICMPType) {
-	f.Filt[typ>>5] &^= 1 << (uint32(typ) & 31)
-
-}
-
-func (f *icmpv6Filter) setAll(block bool) {
-	for i := range f.Filt {
-		if block {
-			f.Filt[i] = 0
-		} else {
-			f.Filt[i] = 1<<32 - 1
-		}
-	}
-}
-
-func (f *icmpv6Filter) willBlock(typ ICMPType) bool {
-	return f.Filt[typ>>5]&(1<<(uint32(typ)&31)) == 0
-}