Delete unused script

This script is dangerous and not maintained; it's currently broken on some boards (doesn't write to the flash at all) and silently
discards all flashrom errors.

BUG=None
TEST=Sent out an email seeing if anyone even still uses this.

Change-Id: Ifc6a169d69a433dee6fee0aa7d3c0e456a4bf903
Reviewed-on: https://chromium-review.googlesource.com/1249604
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Chris McDonald <cjmcdonald@chromium.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
diff --git a/update_fw.sh b/update_fw.sh
deleted file mode 100755
index f717d22..0000000
--- a/update_fw.sh
+++ /dev/null
@@ -1,79 +0,0 @@
-#!/bin/bash
-# Copyright 2017 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.
-
-# Script to update the firmware on a live running ChromiumOS instance.
-
-SCRIPT_ROOT=$(dirname "$(readlink -f $0)")
-. "${SCRIPT_ROOT}/common.sh" || exit 1
-. "${SCRIPT_ROOT}/remote_access.sh" || exit 1
-
-# Script must be run inside the chroot.
-restart_in_chroot_if_needed "$@"
-
-DEFINE_string board "" "Override board reported by target"
-DEFINE_string image "image.dev.bin" "Specify image to be flashed"
-DEFINE_boolean reboot ${FLAGS_TRUE} "Reboot system after update"
-
-# Parse command line.
-FLAGS "$@" || exit 1
-eval set -- "${FLAGS_ARGV}"
-
-# Only now can we die on error.  shflags functions leak non-zero error codes,
-# so will die prematurely if 'switch_to_strict_mode' is specified before now.
-switch_to_strict_mode
-
-cleanup() {
-  cleanup_remote_access
-  rm -rf "${TMP}"
-}
-
-main() {
-  local image_path
-  local image
-  local local_build
-  trap cleanup EXIT
-
-  TMP=$(mktemp -d /tmp/update_fw.XXXXXX)
-
-  remote_access_init
-
-  learn_arch
-
-  learn_board
-
-  local_build="/build/${FLAGS_board}/firmware/${FLAGS_image}"
-
-  # Check if supplied image is absolute path.
-  if [[ -r ${FLAGS_image} ]]; then
-    image=${FLAGS_image}
-    # Also check if we are mistaken with image in local build.
-    if [[ -r ${local_build} ]]; then
-      # Ask user which image needs to be flashed.
-      PS3="Please choose image to be flashed[1]: "
-      choose image "${FLAGS_image}" "${FLAGS_image}" "${FLAGS_image}" \
-        "${local_build}"
-    fi
-    # Flash the user provide image in custom path.
-    image_path=${image}
-  else
-    # Otherwise use image present in local build.
-    image_path=${local_build}
-    # If image doesn't exist, then exit.
-    if [[ ! -r ${image_path} ]]; then
-      die_notrace "Could not find the image ${image_path}"
-    fi
-  fi
-
-  info "copying ${image_path}"
-  remote_cp_to "${image_path}" /tmp/bios.bin
-  info "Updating Firmware..."
-  remote_sh flashrom --fast-verify -w /tmp/bios.bin
-
-  if [[ ${FLAGS_reboot} -eq ${FLAGS_TRUE} ]]; then
-    remote_reboot
-  fi
-}
-
-main "$@"