Remove the checked-in scons configuration files.

build/internal/release_impl_checksenabled.scons

Index: build/internal/release_impl_checksenabled.scons
===================================================================
--- build/internal/release_impl_checksenabled.scons	(revision 12583)
+++ build/internal/release_impl_checksenabled.scons	(working copy)
@@ -1,37 +0,0 @@
-# Copyright (c) 2006-2008 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.
-
-__doc__ = """
-Release settings for Chromium builds with checks enabled.
-"""
-
-Import("env")
-
-env.ApplySConscript(['release_defaults.scons'])
-
-env.Append(
-    CPPDEFINES = [
-        '_DEBUG', '
-        ('_HAS_ITERATOR_DEBUGGING', '0'),
-        ('_SECURE_SCL', '0'),
-    ],
-)
-
-if env.Bit('windows'):
-  env.Replace(
-      CHROMIUM_LINK_OPT_FLAGS = [
-          '/OPT:REF',           # VCLinkerTool.OptimizeReferences="2"
-          '/OPT:NOICF',         # VCLinkerTool.EnableCOMDATFolding="2"
-          '/OPT:NOWIN98',       # VCLinkerTool.OptimizeForWindows98="1"
-      ],
-  ),
-  env.Append(
-      CCFLAGS = [
-          '/Oy-',
-          '/MTd',               # VCCLCompilerTool.RuntimeLibrary="1"
-      ],
-      LINKFLAGS = [
-          '/INCREMENTAL:NO',    # VCLinkerTool.LinkIncremental="1"
-      ],
-  )