Move all main methods to tool/.

pkg/front_end/lib/src/fasta/parser/bin/parser.dart

Index: pkg/front_end/lib/src/fasta/parser/bin/parser.dart
diff --git a/pkg/front_end/lib/src/fasta/parser/bin/parser.dart b/pkg/front_end/lib/src/fasta/parser/bin/parser.dart
deleted file mode 100644
index f6ae03d671d0d6b58040ced34ebd8ad7e16c057d..0000000000000000000000000000000000000000
--- a/pkg/front_end/lib/src/fasta/parser/bin/parser.dart
+++ /dev/null
@@ -1,7 +0,0 @@
-// Copyright (c) 2016, 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 file.
-
-import '../main.dart' as dart_parser;
-
-main(List<String> arguments) => dart_parser.main(arguments);