Remove styles associated with numeric input fields

[aduth]

🛠 Summary of changes

Removes styles associated with [type="number"] input fields (see MDN documentation).

Why?

• To the best of my knowledge, there are no [type="number"] fields in the application
• Reduce size of application stylesheet to improve performance
• Improve maintainability by...
  • Eliminating styles where the intended impact is unclear
  • Aligning closer to design system defaults

We could reintroduce in the future if the need arises, but I think it's worth a reevaluation anyways, and we'd want to scope it to specific instances (e.g. via component stylesheet).

Related resources:

• https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/number#using_number_inputs

  • The number input type should only be used for incremental numbers, especially when spinbutton incrementing and decrementing are helpful to user experience.

• https://technology.blog.gov.uk/2020/02/24/why-the-gov-uk-design-system-team-changed-the-input-type-for-numbers/

📜 Testing Plan

There should be no user-facing impact of these changes.