build: update README for deprecation notice (googleapis#419)

* build: update README for deprecation notice and delete all files except samples

* Update owlbot.py

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

.github/release-please.yml

@@ -1,3 +1,2 @@
-releaseType: node
-primaryBranch: main
 handleGHRelease: true
+releaseType: node

README.md

@@ -1,3 +1,4 @@
+'**_THIS REPOSITORY IS DEPRECATED. ALL OF ITS CONTENT AND HISTORY HAS BEEN MOVED TO [GOOGLE-CLOUD-NODE](https://github.com/googleapis/google-cloud-node/tree/main/packages/google-cloud-phishingprotection)_**'
 [//]: # "This README.md file is auto-generated, all changes to this file will be lost."
 [//]: # "To regenerate it, use `python -m synthtool`."
 <img src="https://avatars2.githubusercontent.com/u/2810941?v=3&s=96" alt="Google Cloud Platform logo" title="Google Cloud Platform" align="right" height="96" width="96"/>

owlbot.py

@@ -1,6 +1,6 @@
-# Copyright 2021 Google LLC
+# Copyright 2022 Google LLC
 #
-# Licensed under the Apache License, Version 2.0 (the "License");
+# Licensed under the Apache License, Version 2.0 (the License);
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
@@ -14,4 +14,6 @@
 
 import synthtool.languages.node as node
 
-node.owlbot_main(templates_excludes=[".github/release-please.yml"])
+node.owlbot_main(templates_excludes=[
+'README.md'
+])