Remove has_valgrind.py - the bots now set this flag explicitly

BUG=none
R=machenbach@chromium.org
NOTRY=true

Review-Url: https://codereview.chromium.org/2034643002
Cr-Commit-Position: refs/heads/master@{#36673}

gypfiles/has_valgrind.py

-#!/usr/bin/env python
-# Copyright 2016 the V8 project 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 os
-
-BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
-VALGRIND_DIR = os.path.join(BASE_DIR, 'third_party', 'valgrind')
-LINUX32_DIR = os.path.join(VALGRIND_DIR, 'linux_x86')
-LINUX64_DIR = os.path.join(VALGRIND_DIR, 'linux_x64')
-
-
-def DoMain(_):
-  """Hook to be called from gyp without starting a separate python
-  interpreter."""
-  return int(os.path.exists(LINUX32_DIR) and os.path.exists(LINUX64_DIR))
-
-
-if __name__ == '__main__':
-  print DoMain([])

gypfiles/standalone.gypi

@@ -113,7 +113,7 @@
       'gomadir%': '',
 
       # Check if valgrind directories are present.
-      'has_valgrind%': '<!pymod_do_main(has_valgrind)',
+      'has_valgrind%': 0,
 
       'test_isolation_mode%': 'noop',