unmaintained/chromium: delete

For reasons unknown to me, git send-email refuses to send this.
>From 054955df1da7503ee0536a8dae051a91aee89954 Mon Sep 17 00:00:00 2001
From: Isaac Dunham <ibid.ag@gmail.com>
Date: Tue, 28 Jul 2015 18:37:44 -0700
Subject: [PATCH] unmaintained/chromium: delete

This lives in main/chromium.