docs(postcss): remove duplicated optimize example from README

[pavan-sh]

Summary

Removed a duplicated optimize: { minify: false } example from @tailwindcss/postcss README (doc-only, one file).

Test plan

Check the duplicate block is removed, the earlier optimize example still exists, and only packages/@tailwindcss-postcss/README.md changed.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: fb4b41ca-39e5-4bac-876e-26f395bf45d1

📥 Commits

Reviewing files that changed from the base of the PR and between 5a835e1 and 3bfe2dc.

📒 Files selected for processing (1)

• packages/@tailwindcss-postcss/README.md

💤 Files with no reviewable changes (1)

• packages/@tailwindcss-postcss/README.md

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Walkthrough

A README example in the Tailwind CSS PostCSS package documentation was removed. The deleted section demonstrated using the optimize: { minify: false } configuration option to disable minification while maintaining Lightning CSS functionality. No changes were made to plugin API examples, behavior descriptions, or exported public interfaces. The modification removed 14 lines with no additions.

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: removing a duplicated optimize example from the README file in the postcss package.
Description check	✅ Passed	The description clearly explains the change (removing duplicated optimize example), specifies it's doc-only, and provides a specific test plan for verification.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

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