Remove Claw Cloud from list

Claw Cloud Run is discontinued: https://question.run.claw.cloud/questions/10010000000003261
And the rest of Claw Cloud is no longer free.

README.md

@@ -1054,7 +1054,6 @@ This list results from Pull Requests, reviews, ideas, and work done by 1600+ peo
   * [back4app.com](https://www.back4app.com) - Back4App is an easy-to-use, flexible and scalable backend based on Parse Platform.
   * [backendless.com](https://backendless.com/) - Mobile and Web Baas, with 1 GB file storage free, push notifications of 50,000/month, and 1000 data objects in the table.
   * [bismuth.cloud](https://www.bismuth.cloud/) - Our AI will boostrap your Python API on our function runtime and hosted storage, build and host for free in our online editor or locally with your favorite tools.
-  * [Claw.cloud](https://run.claw.cloud) - A PaaS platform offering $5/month in free credits for users with a GitHub account older than 180 days. Perfect for hosting apps, databases, and more. ([Signup Link with free credit](https://ap-southeast-1.run.claw.cloud/signin)).
   * [connectycube.com](https://connectycube.com) - Unlimited chat messages, p2p voice & video calls, files attachments and push notifications. Free for apps up to 1000 users.
   * [convex.dev](https://convex.dev/) - Reactive backend as a service, hosting your data (documents with relationships & serializable ACID transactions), serverless functions, and WebSockets to stream updates to various clients. Free for small projects - up to 1M records, 5M monthly function calls.
   * [ETLR](https://etlr.io) - Define, version, and deploy automation scripts using YAML. A developer-first alternative to drag-and-drop tools. Can be used for scheduled tasks, AI agents, and infrastructure monitoring. Free tier includes 100 credits/month.