Remove code associated with the old "kompile" functionality.

pkg/front_end/testcases/rasta/issue_000053.dart.dartk.expect

Index: pkg/front_end/testcases/rasta/issue_000053.dart.dartk.expect
diff --git a/pkg/front_end/testcases/rasta/issue_000053.dart.dartk.expect b/pkg/front_end/testcases/rasta/issue_000053.dart.dartk.expect
deleted file mode 100644
index a4e10a5e5b8e730cbe3c4002aeb043c877964cdc..0000000000000000000000000000000000000000
--- a/pkg/front_end/testcases/rasta/issue_000053.dart.dartk.expect
+++ /dev/null
@@ -1,16 +0,0 @@
-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);
-  }
-}
-static method main() → dynamic {
-  new self::C::•().test();
-}