Remove obsolete refs to gyp-[mac|win]-tool

scripts/slave/build_directory.py

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Functions for discovering and clearing the build directory."""
 
 import os
 import sys
 
 
@@ skipping 76 matching lines @@
       # compile, so make sure not to delete those generated files, otherwise
       # compile will fail.
       if (f.endswith('.ninja') or f.endswith('.manifest') or
           f == 'args.gn' or f == 'mb_type' or f == 'runtime_deps' or
           f.startswith('msvc') or  # VS runtime DLLs.
           f.startswith('pgort') or  # VS PGO runtime DLL.
           f.startswith('vccorlib') or  # VS2015 core libraries.
           f.startswith('vcruntime') or  # VS2015 runtime libraries.
           f.startswith('ucrtbase') or  #  Win runtime DLLs for VS.
           f.startswith('api-ms-win') or  # Win runtime DLLs for VS.
-          f in ('gyp-mac-tool', 'gyp-win-tool',
-                'environment.x86', 'environment.x64')):
+          f in ('environment.x86', 'environment.x64')):
         continue
       # Keep goma related files.
       if f == '.goma_deps':
         continue
       os.unlink(os.path.join(root, f))
     # Delete the directory if empty; this works because the walk is bottom-up.
     try:
       os.rmdir(root)
     except OSError, e:
       if e.errno in (39, 41, 66):
         # If the directory isn't empty, ignore it.
         # On Windows, os.rmdir will raise WindowsError with winerror 145,
         # which e.errno is 41.
         # On Linux, e.errno is 39.
         pass
       else:
         raise