Move kernel baseline tests to front_end.

pkg/front_end/test/fasta/rasta/mixin_library.dart.outline.expect

Index: pkg/front_end/test/fasta/rasta/mixin_library.dart.outline.expect
diff --git a/pkg/front_end/test/fasta/rasta/mixin_library.dart.outline.expect b/pkg/front_end/test/fasta/rasta/mixin_library.dart.outline.expect
deleted file mode 100644
index 18b80ce96fa006cbe6733012f59c06c03e197c9d..0000000000000000000000000000000000000000
--- a/pkg/front_end/test/fasta/rasta/mixin_library.dart.outline.expect
+++ /dev/null
@@ -1,32 +0,0 @@
-library test.mixin_library;
-import self as self;
-import "dart:core" as core;
-
-class Mixin<T extends core::Object> extends core::Object {
-  field dynamic x;
-  field dynamic y;
-  field dynamic z;
-  field self::Mixin::T t;
-  constructor •() → void
-    ;
-  method foo() → dynamic
-    ;
-  method g(self::Mixin::T a) → self::Mixin::T
-    ;
-  method h() → dynamic
-    ;
-  method l() → dynamic
-    ;
-  method _privateMethod() → dynamic
-    ;
-  method publicMethod() → dynamic
-    ;
-}
-static method f() → dynamic
-  ;
-static method V() → dynamic
-  ;
-static method _private() → dynamic
-  ;
-static method foo(dynamic m) → dynamic
-  ;