dev-install: drop unused make.conf.user

This file hasn't been used in a long time (probably not since CL:4060
where we switched to make.defaults).  Drop it to clean things up.

BUG=chromium:935142
TEST=precq passes

Change-Id: I3c56e9b875e7664d7e7e6fd39788d4ab796c985f
Reviewed-on: https://chromium-review.googlesource.com/1484469
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Ned Nguyen <nednguyen@google.com>
diff --git a/dev-install/make.conf.user b/dev-install/make.conf.user
deleted file mode 100644
index 95de283..0000000
--- a/dev-install/make.conf.user
+++ /dev/null
@@ -1,25 +0,0 @@
-# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# This configuration file is intended to reside in the rootfs of pristine
-# images. If the developer mode switch is enabled these settings will allow
-# us to bootstrap emerge and allow to install packages in /usr/local. Rootfs
-# will remain unmodified.
-
-ROOT=/usr/local
-
-PORTDIR=${ROOT}/portage
-
-PKGDIR=${ROOT}/portage/packages
-
-DISTDIR=${ROOT}/portage/distfiles
-
-RPMDIR=${ROOT}/portage/rpm
-
-PORTAGE_TMPDIR=${ROOT}/var/tmp
-
-BUILD_PREFIX=${ROOT}/var/tmp/portage
-
-CONFIG_PROTECT="/usr/share/portage"
-