Update LanguageFeatures/Simple-bounds tests according to https://github.com/dart-lang/language/pull/1133

[iarkh]

dart-lang/language#1133 has been landed, and this means that any test that expects a compile-time error because of a failing i2b that is caused by a type variable which is invariant or unused should be changed to stop expecting that error.

Simple-bounds tests should be updated accordingly.

[eernstg]

I added a bunch of comments on f07abdd, having noted that several of the tests need to have their expectations adjsted.

[eernstg]

Correction (also mentioned in existing comment threads on the PR): Tests LanguageFeatures/Simple-bounds/static/typedef_l1_t04.dart and LanguageFeatures/Simple-bounds/static/typedef_l1_t14.dart are correct in f07abdd after all.

[iarkh]

Correction (also mentioned in existing comment threads on the PR): Tests LanguageFeatures/Simple-bounds/static/typedef_l1_t04.dart and LanguageFeatures/Simple-bounds/static/typedef_l1_t14.dart are correct in f07abdd after all.

I'll go through new comments for f07abdd and check it again today. After this update the tests if still it's needed (maybe not)..

[eernstg]

Thanks!

[iarkh]

Just checked it once again and add a minor change, seems like the tests are OK now...