Remove unused usb-server ebuild

chromeos-base/usb-server/files/install-usbsrv

-#!/bin/bash
-#
-# Copyright (c) 2009 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.
-#
-# We use the tusbd USB-over-IP stack from www.incentivespro.com to do
-# test configuration of some hardware.  Their userland is
-# free-as-in-beer and we don't have redistribution rights, so we ask
-# people who need it to download and install it on the target machine
-# with this script.
-
-set -e
-set -u
-
-TARGETDIR="$(dirname "$0")"
-
-tmpdir=$(mktemp -d)
-
-cd ${tmpdir}
-wget http://incentivespro.com/usb-server.tar.gz
-
-echo Verifying download...
-
-# NB: sha256sum input must be hexhexhex<SPC><SPC>filename.  echo
-# supplies one, we supply the other.
-echo "31b022ce88e77f31f40ea4821d864e6099e70ee451937c978d6979e2ca6c84fe"\
-     " usb-server.tar.gz" \
-  |  sha256sum -c
-
-echo Verified
-
-# Don't want to delete temp directory until verification passes (so we can
-# debug)
-trap "rm -rf ${tmpdir}; exit 1" 1 2 13 15
-
-tar -xzf usb-server.tar.gz
-
-cd usb-server
-sudo cp usbsrv ${TARGETDIR}/usbsrv.real
-sudo cp usbsrvd ${TARGETDIR}
-# Don't need usbsrvd-cl
-
-cd /
-echo USB server installation successful
-rm -rf ${tmpdir}