remove: https://github.com/laher/goxc (#5524)

README.md

@@ -3311,7 +3311,6 @@ _Software written in Go._
 - [gonative](https://github.com/inconshreveable/gonative) - Tool which creates a build of Go that can cross compile to all platforms while still using the Cgo-enabled versions of the stdlib packages.
 - [govvv](https://github.com/ahmetalpbalkan/govvv) - “go build” wrapper to easily add version information into Go binaries.
 - [gox](https://github.com/mitchellh/gox) - Dead simple, no frills Go cross compile tool.
-- [goxc](https://github.com/laher/goxc) - build tool for Go, with a focus on cross-compiling and packaging.
 - [grapes](https://github.com/yaronsumel/grapes) - Lightweight tool designed to distribute commands over ssh with ease.
 - [GVM](https://github.com/moovweb/gvm) - GVM provides an interface to manage Go versions.
 - [Hey](https://github.com/rakyll/hey) - Hey is a tiny program that sends some load to a web application.