Remove unused dependencies in package.json

[beguene]

This won't reduce the bundle size but will make our node_modules smaller, make yarn install faster and give us more clarity during development

Unused dependencies

• @emotion/cache
• @reach/tooltip
• @react-aria/interactions
• @react-stately/toggle
• @stacks/common
• @stacks/connect-ui
• @stacks/ui-theme
• buffer
• express
• monacode
• next-plugin-preact
• nookies
• preact-render-to-string
• react-ssr-prepass
• schema-inspector
  Unused devDependencies
• @commitlint/config-conventional
• @segment/analytics.js-core
• @types/express
• @types/fontfaceobserver
• @types/jest
• @types/just-debounce-it
• @types/store
• @types/styled-system__theme-get
• @typescript-eslint/eslint-plugin
• @welldone-software/why-did-you-render
• commitlint
• eslint-config-next
• eslint-plugin-prettier
• husky
• lint-staged
• package-json-cleanup-loader