Fix dependencies

vendor/golang.org/x/net/ipv4/icmp_linux.go

@@ -1,25 +0,0 @@
-// Copyright 2014 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 ipv4
-
-func (f *icmpFilter) accept(typ ICMPType) {
-	f.Data &^= 1 << (uint32(typ) & 31)
-}
-
-func (f *icmpFilter) block(typ ICMPType) {
-	f.Data |= 1 << (uint32(typ) & 31)
-}
-
-func (f *icmpFilter) setAll(block bool) {
-	if block {
-		f.Data = 1<<32 - 1
-	} else {
-		f.Data = 0
-	}
-}
-
-func (f *icmpFilter) willBlock(typ ICMPType) bool {
-	return f.Data&(1<<(uint32(typ)&31)) != 0
-}