Cleanup: Remove buildbot_valgrind.sh, since it is no longer used

buildbot/buildbot_selector.py

 #!/usr/bin/python
 # Copyright (c) 2012 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import json
 import os
 import subprocess
 import sys
 import tempfile
@@ skipping 77 matching lines @@
             'https://code.google.com/p/nativeclient/issues/detail?id=3158"',
     'precise-64-glibc-dbg-valgrind':
         echo + ' "Valgrind bots are disabled: see '
             'https://code.google.com/p/nativeclient/issues/detail?id=3158"',
 
     ######################################################################
     # Trybots.
     ######################################################################
     'nacl-precise64_validator_opt':
         python + ' buildbot/buildbot_standard.py opt 64 glibc --validator',
-    'nacl-precise64_newlib_dbg_valgrind':
-        bash + ' buildbot/buildbot_valgrind.sh newlib',
-    'nacl-precise64_glibc_dbg_valgrind':
-        bash + ' buildbot/buildbot_valgrind.sh glibc',
     # Android trybots.
     'nacl-precise64-newlib-dbg-android':
         echo + ' "Android bots are disabled and going away"',
     'nacl-precise64-newlib-opt-android':
         echo + ' "Android bots are disabled and going away"',
     # ASan.
     'nacl-precise_64-newlib-dbg-asan':
         python + ' buildbot/buildbot_standard.py opt 64 newlib --asan',
     'nacl-mac-newlib-dbg-asan':
         python + ' buildbot/buildbot_standard.py opt 32 newlib --asan',
@@ skipping 321 matching lines @@
     ])
 
   print "%s runs: %s\n" % (builder, cmd)
   sys.stdout.flush()
   retcode = subprocess.call(cmd, env=env, shell=True)
   sys.exit(retcode)
 
 
 if __name__ == '__main__':
   Main()