Remove unused resin-write bin script

This script was used along with windosu as a workaround to call `device
init` with elevated permissions.

Since Windows elevation is not used anymore for now, this script can be
removed.

bin/resin-write

@@ -1,16 +0,0 @@
-#!/usr/bin/env node
-
-var os = require('../build/actions/os');
-var errors = require('../build/errors');
-
-// TODO: Do some error handling when image or device are incorrect
-
-os.install.action({
-	image: process.argv[2],
-	device: process.argv[3]
-}, {
-	yes: true,
-	fromScript: true
-}, function(error) {
-	return errors.handle(error);
-});