Revert "Issue 34437. Restore checking that optional parameters in derived classes should have the same default values as overridden."

This reverts commit 6699384dddfac8da9e4a2edfca2f6445d412358a.

Reason for revert: Breakages in Flutter - see https://logs.chromium.org/logs/dart/buildbucket/cr-buildbucket.appspot.com/8923238548150736816/+/steps/analyze_flutter/0/stdout

Original change's description:
> Issue 34437. Restore checking that optional parameters in derived classes should have the same default values as overridden.
> 
> R=​brianwilkerson@google.com, paulberry@google.com
> 
> Bug: https://github.com/dart-lang/sdk/issues/34437
> Change-Id: Ic54d2e074bc764376f970c9c29ba260e7a373d93
> Reviewed-on: https://dart-review.googlesource.com/c/91170
> Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>

TBR=paulberry@google.com,scheglov@google.com,brianwilkerson@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: https://github.com/dart-lang/sdk/issues/34437
Change-Id: I07c96c8131c16b2748a403f38d5f15b814131c63
Reviewed-on: https://dart-review.googlesource.com/c/91360
Reviewed-by: Paul Berry <paulberry@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
15 files changed
tree: 7ee7540383009267b3bbfdde0f476ab666299114
  1. .github/
  2. build/
  3. client/
  4. docs/
  5. pkg/
  6. runtime/
  7. samples/
  8. samples-dev/
  9. sdk/
  10. tests/
  11. third_party/
  12. tools/
  13. utils/
  14. .clang-format
  15. .gitattributes
  16. .gitconfig
  17. .gitignore
  18. .gn
  19. .mailmap
  20. .packages
  21. .vpython
  22. AUTHORS
  23. BUILD.gn
  24. CHANGELOG.md
  25. codereview.settings
  26. CONTRIBUTING.md
  27. dartdoc_options.yaml
  28. DEPS
  29. LICENSE
  30. PATENTS
  31. PRESUBMIT.py
  32. README.dart-sdk
  33. README.md
  34. WATCHLISTS
README.md

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