Revert "First step for modular output in fasta."

pkg/front_end/testcases/shaker/empty_program.dart

Index: pkg/front_end/testcases/shaker/empty_program.dart
diff --git a/pkg/front_end/testcases/shaker/empty_program.dart b/pkg/front_end/testcases/shaker/empty_program.dart
deleted file mode 100644
index c4169cb6755e23a4840be3858dcb1a92a2e1f380..0000000000000000000000000000000000000000
--- a/pkg/front_end/testcases/shaker/empty_program.dart
+++ /dev/null
@@ -1,9 +0,0 @@
-// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE.md file.
-
-// An empty program will include some minimal pieces of dart:core and dart:async
-// that today are required by fasta and by the kernel transformers.
-
-// @@SHOW_CORE_LIBRARIES@@ (special comment for the test framework).
-main() {}