Move kernel baseline tests to front_end.

pkg/front_end/test/fasta/rasta/native_is_illegal.dart.dartk.expect

Index: pkg/front_end/test/fasta/rasta/native_is_illegal.dart.dartk.expect
diff --git a/pkg/front_end/test/fasta/rasta/native_is_illegal.dart.dartk.expect b/pkg/front_end/test/fasta/rasta/native_is_illegal.dart.dartk.expect
deleted file mode 100644
index 36cec9b05d3bf5f9ce7639dff4ff1f2ea29ed433..0000000000000000000000000000000000000000
--- a/pkg/front_end/test/fasta/rasta/native_is_illegal.dart.dartk.expect
+++ /dev/null
@@ -1,16 +0,0 @@
-library;
-import self as self;
-import "dart:core" as core;
-
-class Bar extends core::Object {
-  get x() → self::Bar
-    return "Bar_get_x";
-  set x(self::Bar value) → dynamic
-    return "Bar_set_x";
-  method f() → dynamic
-    return "Bar_f";
-  static factory •() → self::Bar
-    return "Bar_constructor";
-}
-static method foo() → dynamic
-  invalid-statement;