`assets/script-*-packages.min.php` files are not minified

[desrosj]

Follow up to #64393.

The build script creates four files in the wp-includes/assets directory:

• script-loader-packages.php
• script-loader-packages.min.php
• script-modules-packages.php
• script-modules-packages.min.php

Despite one version of the file being named .min.php, both files are unminified. The .min files should either be minified or removed.

This removes the script-loader-packages.min.php and script-modules-packages.min.php files.

They were not being minified and an unminified vesion of the file is more human readable. The unminified file is roughly 10KB larger, which seems like a reasonable tradeoff.

Trac ticket: Core-64909.

## Use of AI Tools

AI assistance: Yes
Tool(s): Claude Code
Model(s): Sonnet 4.6
Used for: A detailed prompt was given to Claude to work through the changes required. The results were reviewed by me and adjustments were made.
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[desrosj]

In 62072:

Build/Test Tools: Stop generating unminified .min file.

The generated wp-includes/assets/script-loader-packages.min.php and wp-includes/assets/script-modules-packages.min.php files are not actually minified. Additionally, the only purpose they serve is to pass a different script handle to the script loader (.min.js vs. .js).

This eliminates the need for those files entirely since the difference in file size is negligible, and a human-readable version is more useful.

Props peterwilsoncc, desrosj.
Fixes #64909.

[desrosj]

#50460 was marked as a duplicate.