Remove frog from the repository.

frog/scripts/bootstrap/frogc.bat

Index: frog/scripts/bootstrap/frogc.bat
diff --git a/frog/scripts/bootstrap/frogc.bat b/frog/scripts/bootstrap/frogc.bat
deleted file mode 100644
index 2e728a91e51975285430df426cfa732a8103340c..0000000000000000000000000000000000000000
--- a/frog/scripts/bootstrap/frogc.bat
+++ /dev/null
@@ -1,18 +0,0 @@
-@echo off
-REM Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-REM for details. All rights reserved. Use of this source code is governed by a
-REM BSD-style license that can be found in the LICENSE file.
-
-REM Run frogc.dart on the Dart VM with its libdir set correctly.
-
-set SCRIPTPATH=%~dp0
-
-REM Does the string have a trailing slash? If so, remove it.
-if %SCRIPTPATH:~-1%==\ set SCRIPTPATH=%SCRIPTPATH:~0,-1%
-set LIBPATH=%SCRIPTPATH%\..\lib
-
-REM Canonicalize the direction of the slashes.
-set script=%*
-set script=%script:\=/%
-
-"%SCRIPTPATH%\dart.exe" "%SCRIPTPATH%\frogc.dart" --no_colors --libdir="%LIBPATH%" %script%