fix(lint): clear eslint-loader warnings (unused Skeleton, anonymous page exports)

[jimmyandrade]

Summary

gatsby develop / HMR eslint-loader prints module warnings:

1. src/components/LocationStep/index.js — 'Skeleton' is defined but never used (no-unused-vars). The only Skeleton usage was inside a commented-out block.
2. Several page templates exported anonymous arrow functions, triggering no-anonymous-exports-page-templates (Fast Refresh):
   • src/pages/ajuda/index.js
   • src/pages/consultar/index.js
   • src/pages/denunciar/index.js
   • src/pages/privacidade/index.js
   • src/pages/sobre/index.js
   • src/pages/termos/index.js

(Also noted in the browser: font preload unused — separate, lower priority; likely prefetch-google-fonts.)

Acceptance criteria

• Remove unused Skeleton import (and dead commented usage) from LocationStep
• Name default exports on the listed pages (same pattern as IndexPage)
• Production changes covered by unit tests
• Related Jest suites stay green

Resolution

Shipped in #454.

[jimmyandrade]

Fixed in #454.