Revert "[flutter_tools] Allow providing dart-defines to Android, iOS, macOS builds (#51714)" (#52041)

This reverts commit ee60eeea.

This reverts commit e4fbb1ab.

* Fix stack trace parsing on non-debug builds; add e2e tests

* unnecessary escapes fixes

* replace some strings with raw strings

* update regexp

* address review comments

This reverts commit e03f4391.

Initial web benchmark harness and 3 benchmarks

Revert "Check Xcode build setting FULL_PRODUCT_NAME for the name of the built app during flutter run (#47266)" (#47568)

This reverts commit 648a5d8a.

Check Xcode build setting FULL_PRODUCT_NAME for the name of the built app during flutter run (#47266)

Revert "Check Xcode build setting FULL_PRODUCT_NAME for the name of the built app during flutter run (#46928)" (#47264)

This reverts commit e54e301d.

Check Xcode build setting FULL_PRODUCT_NAME for the name of the built app during flutter run (#46928)

This reverts commit adec6977.

* Update project.pbxproj files to say Flutter rather than Chromium

Also, the templates now have an empty organization so that we don't cause people to give their apps a Flutter copyright.

* Update the copyright notice checker to require a standard notice on all files

* Update copyrights on Dart files. (This was a mechanical commit.)

* Fix weird license headers on Dart files that deviate from our conventions; relicense Shrine.

Some were already marked "The Flutter Authors", not clear why. Their
dates have been normalized. Some were missing the blank line after the
license. Some were randomly different in trivial ways for no apparent
reason (e.g. missing the trailing period).

* Clean up the copyrights in non-Dart files. (Manual edits.)

Also, make sure templates don't have copyrights.

* Fix some more ORGANIZATIONNAMEs