Update rasta outline expectations.

pkg/front_end/test/fasta/rasta/issue_000053.dart.outline.expect

 library;
 import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → self::C
-    : super core::Object::•();
-  operator ==(dynamic other) → dynamic
-    return throw "x";
-  method test() → dynamic {
-    super.{core::Object::==}(null);
-  }
+  constructor •() → void
+    ;
+  method ==(dynamic other) → dynamic
+    ;
+  method test() → dynamic
+    ;
 }
-static method main() → dynamic {
-  new self::C::•().test();
-}
+static method main() → dynamic
+  ;