Removes unnecessary files

[brunobasto]

Description

Changelog Description

class-integration.php will live in mu-plugins (PR) and is not really necessary for the dev env. Removing to keep the codebase cleaner.

Pre-review checklist

Please make sure the items below have been covered before requesting a review:

• This change works and has been tested locally or in Codespaces (or has an appropriate fallback).
• This change has relevant unit tests (if applicable).
• This change has relevant documentation additions / updates (if applicable).
• I've created a changelog description that aligns with the provided examples.

Pre-deploy checklist

• VIP staff: Ensure any alerts added/updated conform to internal standards (see internal documentation).

Steps to Test

[Copilot]

Pull Request Overview

This PR removes the now-unneeded integration file and its dependent code in order to clean up the codebase.

• Removed all references to class-integration.php and its related integration functionality in vip-security-boost.php.
• Updated dev-env.php to trigger an error when VIP_CONFIG_API_URL is missing.
• Deleted the obsolete class-integration.php file.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
vip-security-boost.php	Removed integration requires and integration registration code.
utils/dev-env.php	Added an error trigger for missing VIP_CONFIG_API_URL environment variable.
class-integration.php	Removed obsolete integration class file.

[kat3samsin]

Thanks for the cleanup!