Remove some scons.py files we don't use anymore. They were

tools/data_pack/scons.py

-#!/usr/bin/python
-#
-# 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.
-
-import sys
-
-def _SConsNodeToFile(file_node):
-  '''Convert a scons file Node object to a path on disk.'''
-  return str(file_node.rfile())
-
-
-def _Build(target, source, env):
-  '''Run the repack script.'''
-  data_pack_root_dir = env.subst('$CHROME_SRC_DIR/tools/data_pack')
-  sys.path.append(data_pack_root_dir)
-  import repack
-  sources = [_SConsNodeToFile(s) for s in source]
-  repack.RePack(_SConsNodeToFile(target[0]), sources)
-
-
-def _BuildStr(targets, sources, env):
-  '''This message gets printed each time the builder runs.'''
-  return "Repacking data files into %s" % str(targets[0].rfile())
-
-
-def _Scanner(file_node, env, path):
-  '''Repack files if repack.py or data_pack.py have changed.'''
-  data_pack_root_dir = env.subst('$CHROME_SRC_DIR/tools/data_pack')
-
-  files = []
-  for f in ('repack.py', 'data_pack.py'):
-    files.append(os.path.join(data_pack_root_dir, f))
-  return files
-
-
-#############################################################################
-## SCons Tool api methods below.
-def generate(env):
-  action = env.Action(_Build, _BuildStr)
-  scanner = env.Scanner(function=_Scanner, skeys=['.pak'])
-
-  builder = env.Builder(action=action,
-                        source_scanner=scanner,
-                        src_suffix='.pak')
-
-  # add our builder and scanner to the environment
-  env.Append(BUILDERS = {'Repack': builder})
-
-
-# Function name is mandated by newer versions of SCons.
-def exists(env):
-  return 1