chore: Remove dead dependencies

[snowystinger]

Closes

Removes plop
Updates glob and removes glob-promise because glob now natively supports that
Removes dead useSearchAutocomplete docs
Removes yargs in favour of native node arg handling
Updates rimraf
Removes instanbul, nyc, babelify, p-queue, react-axe, and sinon becasue we don't currently use them
Updates postcss

✅ Pull Request Checklist:

• Included link to corresponding React Spectrum GitHub Issue.
• Added/updated unit tests and storybook for this change (for new code or code which already has tests).
• Filled out test instructions.
• Updated documentation (if it already exists for this component).
• Looked at the Accessibility Practices for this feature - Aria Practices

📝 Test Instructions:

🧢 Your Project:

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[rspbot]

Build successful! 🎉

• View the storybook
• View the S2 storybook
• View the documentation
• View the S2 docs