Remove Skia's forked buildbot code

master/skia_master_scripts/xsan_factory.py

Index: master/skia_master_scripts/xsan_factory.py
diff --git a/master/skia_master_scripts/xsan_factory.py b/master/skia_master_scripts/xsan_factory.py
deleted file mode 100644
index ec132cd3781c2fa793e7d885d2bb2b388279d29d..0000000000000000000000000000000000000000
--- a/master/skia_master_scripts/xsan_factory.py
+++ /dev/null
@@ -1,15 +0,0 @@
-# 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.
-
-from skia_master_scripts import factory as skia_factory
-
-class XsanFactory(skia_factory.SkiaFactory):
-  def __init__(self, sanitizer, **kwargs):
-    """ Sets up a factory for builds using one of Clang's sanitizer modes.
-
-    sanitizer: name of the sanitizer to use (e.g. address, thread, undefined)
-    """
-    skia_factory.SkiaFactory.__init__(self, flavor='xsan', **kwargs)
-    self._common_args += ['--sanitizer', sanitizer]
-