Remove the checked-in scons configuration files.

build/debug.scons

Index: build/debug.scons
===================================================================
--- build/debug.scons	(revision 12583)
+++ build/debug.scons	(working copy)
@@ -1,40 +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__ = """
-Debug settings for Chromium builds.
-
-Incorporates "essential" and "chromium_build" settings.
-"""
-
-Import("env")
-
-env.ApplySConscript([
-    'internal/essential.scons',
-    'internal/chromium_build${CHROMIUM_BUILD}.scons',
-])
-
-env.Append(
-    CPPDEFINES = [
-        '_DEBUG',
-    ],
-)
-
-if env.Bit('windows'):
-  if env.get('INCREMENTAL') is None:
-    # INCREMENTAL was not specified on the command line or in the
-    # external environment; debug default is incremental link.
-    env['INCREMENTAL'] = True
-    env['CHROMIUM_INCREMENTAL_FLAGS'] = '/INCREMENTAL'
-
-  env.Append(
-      CCFLAGS = [
-          '/Od',              # VCCLCompilerTool.Optimization="0"
-          '/RTC1',            # VCCLCompilerTool.BasicRuntimeChecks="3"
-          '/MTd',             # VCCLCompilerTool.RuntimeLibrary="1"
-      ],
-      LINKFLAGS = [
-          '/DEBUG',
-      ],
-  )