chore: deprecate coupon (#2597)

Author: vinckr

README.md

@@ -45,11 +45,6 @@ ory create project
 
 Ory Cloud ships administrative user interfaces, hosted pages (e.g. for login or registration), support for custom domains, collaborative features for your colleagues, integration services, and much more!
 
-### :mega: Community gets Ory Cloud for Free! :mega:
-
-Ory community members get the Ory Cloud Start Up plan **free for half a year**, with all quality-of-life features available, such as custom domains and giving your team members access. [Sign up with your GitHub account](https://console.ory.sh/registration?preferred_plan=start-up&utm_source=github&utm_medium=banner&utm_campaign=kratos-readme-first900) and use the coupon code **`FIRST900`** on the *"Start-Up Plan"* checkout page to claim your free project now! Make sure to be signed up to the [Ory Community Slack](https://slack.ory.sh) when using the code!
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-
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 **Table of Contents**