Revert of depot_tools: add infra_paths recipe module for infra-specific paths

recipe_modules/infra_paths/api.py

-# Copyright 2016 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 recipe_engine import recipe_api
-
-
-class InfraPathsApi(recipe_api.RecipeApi):
-  def get_config_defaults(self):
-    return {
-      'PLATFORM': self.m.platform.name,
-      'CURRENT_WORKING_DIR': self.m.path['cwd'],
-      'ROOT': self.m.path['root'],
-    }
-
-  def __init__(self, **kwargs):
-    super(InfraPathsApi, self).__init__(**kwargs)
-    self._config_set = False
-
-  def _lazy_set_config(self):
-    if self._config_set:
-      return
-    self._config_set = True
-
-    path_config = self.m.properties.get('path_config')
-    if path_config in ('kitchen',):
-      self.set_config(path_config)
-    else:
-      self.set_config('buildbot')
-
-  def __getitem__(self, name):
-    self._lazy_set_config()
-    return self.c.paths[name]