Tracker issue for removing the deprecations that have reached end of life after the 1.22 stable release.

Some resources and context:

• All deprecations that are due for removal: https://flutter.dev/go/deprecations-removed-after-1-22
• Deprecation policy: https://github.com/flutter/flutter/wiki/Tree-hygiene#deprecation
• Policy design doc: https://flutter.dev/go/deprecation-lifetime
• Article: https://medium.com/flutter/deprecation-lifetime-in-flutter-e4d76ee738ad
• Original Eval PR: [WIP] Examining deprecation usage #67789

This should also have a final migration guide under breaking changes on the website for additional guidance/seo. :)