Feat [prevent]: Updated AI code review docs to remove gen tests (#15549)

## DESCRIBE YOUR PR
Updated AI code review docs to remove gen tests. 

preview:
https://sentry-docs-git-remove-gen-test-prompt.sentry.dev/product/ai-in-sentry/ai-code-review/

## IS YOUR CHANGE URGENT?  

Help us prioritize incoming PRs by letting us know when the change needs
to go live.
- [ ] Urgent deadline (GA date, etc.): <!-- ENTER DATE HERE -->
- [ ] Other deadline: <!-- ENTER DATE HERE -->
- [ ] None: Not urgent, can wait up to 1 week+

## SLA

- Teamwork makes the dream work, so please add a reviewer to your PRs.
- Please give the docs team up to 1 week to review your PR unless you've
added an urgent due date to it.
Thanks in advance for your help!

## PRE-MERGE CHECKLIST

*Make sure you've checked the following before merging your changes:*

- [ ] Checked Vercel preview for correctness, including links
- [ ] PR was reviewed and approved by any necessary SMEs (subject matter
experts)
- [ ] PR was reviewed and approved by a member of the [Sentry docs
team](https://github.com/orgs/getsentry/teams/docs)

Co-authored-by: Shannon Anahata <[email protected]>

Author: sfanahata

docs/product/ai-in-sentry/ai-code-review/index.mdx

@@ -2,12 +2,12 @@
 title: AI Code Review
 sidebar_order: 30
 description: >-
-  Get error predictions, code reviews and new tests for better code and
+  Get error predictions and code reviews for better code and
   coverage.
 og_image: /og-images/product-ai-in-sentry-ai-code-review.png
 ---
 
-AI Code Review helps you generate new tests for uncovered code and reviews your code changes, predicting errors and offering suggestions for improvement before merging pull requests.
+AI Code Review helps you reviews your code changes, predicting errors and offering suggestions for improvement before merging pull requests.
 
 <Alert>
   AI Code Review is currently in <strong>beta</strong>. Beta features are
@@ -35,9 +35,7 @@ After installing the app, AI Code Review can help you in three ways:
 
 2. **`@sentry review`** - Use this command in a PR comment, and the assistant will review the PR and predict errors, as well as make suggestions.
 
-3. **`@sentry generate-test`** - Use this command in a PR comment, and the assistant will generate tests for your PR.
-
-Once you have added a comment, the assistant will reply, acknowledging the request. For code reviews, you will then see comments added to your PR. For test generation, you will see a comment with a link to the generated tests.
+Once you have added a comment, the assistant will reply, acknowledging the request. For code reviews, you will then see comments added to your PR. 
 
 ![Sentry Prevent AI Overview =900x](./img/prevent-ai-response.png)
 
@@ -55,7 +53,7 @@ Once you have added a comment, the assistant will reply, acknowledging the reque
 
 - **Why aren't `@sentry` commands working?**
 
-  AI Code Review will respond with a message to enable the `Show Generative AI Features` and `Enable PR Review and Test Generation` settings in your [organization settings](https://sentry.io/orgredirect/settings/:orgslug/), if you have not already enabled them. Once enabled, try `@sentry review` or `@sentry generate-test` again to run AI Code Review.
+  AI Code Review will respond with a message to enable the `Show Generative AI Features` and `Enable PR Review and Test Generation` settings in your [organization settings](https://sentry.io/orgredirect/settings/:orgslug/), if you have not already enabled them. Once enabled, try `@sentry review` again to run AI Code Review.
 
 - **Is AI Code Review available in the EU region?**