Ignore illegal_language_version_override for non null-safe fixtures (#1891)

Author: elliette

fixtures/_test/example/append_body/main.dart

@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore: illegal_language_version_override
 // @dart=2.9
 
 import 'dart:async';

fixtures/_test/example/hello_world/main.dart

@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore: illegal_language_version_override
 // @dart=2.9
 
 import 'dart:async';

fixtures/_test/example/hello_world/part.dart

@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore: illegal_language_version_override
 // @dart=2.9
 
 part of 'main.dart';

fixtures/_test/lib/deferred_library.dart

@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore: illegal_language_version_override
 // @dart=2.9
 
 /// A library that we can import.

fixtures/_test/lib/library.dart

@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore: illegal_language_version_override
 // @dart=2.9
 
 /// A library that we can import.

fixtures/_testCircular1/lib/library1.dart

@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore: illegal_language_version_override
 // @dart=2.9
 
 /// A library that we can import.

fixtures/_testCircular2/lib/library2.dart

@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore: illegal_language_version_override
 // @dart=2.9
 
 import 'package:_test_circular1/library1.dart';

fixtures/_testCircular2/web/main.dart

@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore: illegal_language_version_override
 // @dart=2.9
 
 import 'dart:async';

fixtures/_testPackage/lib/src/test_part.dart

@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore: illegal_language_version_override
 // @dart=2.9
 
 part of '../test_library.dart';

fixtures/_testPackage/lib/test_library.dart

@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore: illegal_language_version_override
 // @dart=2.9
 
 part 'src/test_part.dart';

fixtures/_testPackage/web/main.dart

@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore: illegal_language_version_override
 // @dart=2.9
 
 import 'dart:async';

fixtures/_webdevSmoke/web/main.dart

@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore: illegal_language_version_override
 // @dart = 2.9
 
 import 'dart:async';

fixtures/_webdevSmoke/web/scopes_main.dart

@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore: illegal_language_version_override
 // @dart = 2.9
 
 /// An example with more complicated scope