[devtools] Remove obsolete update script.

The devtools cipd packages are now automatically built in the secure
release infrastructure and humans are no longer able to directly upload
the cipd packages. Cherry-picks to the release branches are handled by
specially triggering the secure builder.

Bug: b/297020298
Change-Id: I8d587cf787b85abea1762c7f302b261298adf83d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/323640
Reviewed-by: William Hesse <whesse@google.com>
Commit-Queue: Jonas Termansen <sortie@google.com>

third_party/devtools/README.md

@@ -4,8 +4,9 @@ packages from the same revision, used to host and launch DevTools from a Dart pr
 
 To build DevTools and update the CIPD resources, do the following:
 
-- Run ./update.sh <revision> to build DevTools at a given revision and upload it
-  to CIPD. The uploaded CIPD entry will be tagged with `revision:<revision>`
+- Commits on devtools master are automatically built and packaged in CIPD.
+  If a cherry-pick must be rolled into DEPS, then follow
+  go/dart-engprod/devtools.md to manually trigger a secure devtools cipd build.
 - Update DEPS to point to the newly updated DevTools by providing "revision:<revision>"
   as the version entry for "third_party/devtools"
 

third_party/devtools/update.sh

@@ -1,42 +0,0 @@
-#!/bin/bash
-
-# Copyright 2021 The Dart Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-set -ex #echo on
-
-if [ -z "$1" ]; then
-  echo "Usage: update.sh revision"
-  exit 1
-fi
-
-tmpdir=$(mktemp -d)
-cleanup() {
-  rm -rf "$tmpdir"
-}
-
-trap cleanup EXIT HUP INT QUIT TERM PIPE
-cd "$tmpdir"
-
-# Clone DevTools and build.
-git clone git@github.com:flutter/devtools.git
-cd devtools
-git checkout -b cipd_release $1
-
-# If $2 equals "--no-update-flutter", the build_release.sh script will build
-# DevTools from the Flutter SDK that already exists on the user's path.
-./tool/build_release.sh $2
-
-# Copy the build output as well as the devtools packages needed
-# to serve from DDS.
-mkdir cipd_package
-cp -R packages/devtools_app/build/web cipd_package/web
-cp -r packages/devtools_shared cipd_package
-
-cipd create \
-  -name dart/third_party/flutter/devtools \
-  -in cipd_package \
-  -install-mode copy \
-  -preserve-writable \
-  -tag git_revision:$1