Delete some copy/pasted doc comments

Where we have an `@override` which duplicate's the super types doc
comment it is not adding anything useful and can be removed.

Also do some minor comment cleanup where feasible:
- Introduce blank lines following the first sentence to follow effective
  dart guidelines.
- Change non-doc comments to use two slashes.
- Where comments were improved after being pasted, bring the improvement
  to the original comment.
- Move comments where there was no comment on the super type but the
  subtype comment clearly applied.

Change-Id: I61b5eca79f692641ce96c5c9d26fa3731c8e230e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/97008
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Commit-Queue: Nate Bosch <nbosch@google.com>
25 files changed
tree: 075c7be63643f57d4fc04981e43a3b4b0ffd586a
  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. DEPS
  28. LICENSE
  29. PATENTS
  30. PRESUBMIT.py
  31. README.dart-sdk
  32. README.md
  33. WATCHLISTS
README.md

Dart

Dart is an open-source, scalable programming language, with robust libraries and runtimes, for building web, server, and mobile apps.

Using Dart

Visit the dartlang.org to learn more about the language, tools, getting started, and more.

Browse pub.dartlang.org for more packages and libraries contributed by the community and the Dart team.

Building Dart

If you want to build Dart yourself, here is a guide to getting the source, preparing your machine to build the SDK, and building.

There are more documents on our wiki.

Contributing to Dart

The easiest way to contribute to Dart is to file issues.

You can also contribute patches, as described in Contributing.

License & patents

See LICENSE and PATENTS.