Update from https://crrev.com/309415

third_party/tcmalloc/PRESUBMIT.py

Index: third_party/tcmalloc/PRESUBMIT.py
diff --git a/third_party/tcmalloc/PRESUBMIT.py b/third_party/tcmalloc/PRESUBMIT.py
deleted file mode 100755
index dccfde67e1da639cce80049451638386b63ce378..0000000000000000000000000000000000000000
--- a/third_party/tcmalloc/PRESUBMIT.py
+++ /dev/null
@@ -1,16 +0,0 @@
-# Copyright (c) 2009 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.
-
-"""Chromium presubmit script for third_party/tcmalloc.
-
-See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
-for more details on the presubmit API built into gcl.
-"""
-
-def GetPreferredTryMasters(project, change):
-  return {
-    'tryserver.chromium.linux': {
-      'linux_valgrind': set(['defaulttests']),
-    }
-  }