minor #1200 [Agent] Remove ai-platform from "require-dev" section of composer.json (lyrixx)

This PR was merged into the main branch.

Discussion
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[Agent] Remove ai-platform from "require-dev" section of composer.json

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| Docs?         | no
| Issues        |
| License       | MIT

It's already in "require" section

Commits
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fa0632e [Agent] Remove ai-platform from "require-dev" section of composer.json

Author: OskarStark

src/agent/composer.json

@@ -41,7 +41,6 @@
         "phpstan/phpstan": "^2.1",
         "phpstan/phpstan-strict-rules": "^2.0",
         "phpunit/phpunit": "^11.5.46",
-        "symfony/ai-platform": "@dev",
         "symfony/ai-store": "@dev",
         "symfony/event-dispatcher": "^7.3|^8.0",
         "symfony/translation": "^7.3|^8.0",