[step] Remove config indirection.

recipe_modules/step/config.py

Index: recipe_modules/step/config.py
diff --git a/recipe_modules/step/config.py b/recipe_modules/step/config.py
deleted file mode 100644
index 031ceb556c5ce2b5601702be033cce68f38f1578..0000000000000000000000000000000000000000
--- a/recipe_modules/step/config.py
+++ /dev/null
@@ -1,60 +0,0 @@
-# Copyright 2013 The LUCI Authors. All rights reserved.
-# Use of this source code is governed under the Apache License, Version 2.0
-# that can be found in the LICENSE file.
-
-import collections
-
-from recipe_engine.config import (config_item_context, ConfigGroup, ConfigList,
-                                  Dict, Single, Set, List)
-from recipe_engine.config_types import Path
-from recipe_engine.util import Placeholder
-
-
-def BaseConfig(**_kwargs):
-  def render_cmd(lst):
-    return [(x if isinstance(x, Placeholder) else str(x)) for x in lst]
-
-  return ConfigGroup(
-    # For compatibility with buildbot, the step name must be ascii, which is why
-    # this is a 'str' and not a 'basestring'.
-    name = Single(str),
-    base_name = Single(str, required=False),
-    cmd = List(inner_type=(int,long,basestring,Path,Placeholder),
-               jsonish_fn=render_cmd),
-    timeout = Single(int, required=False),
-
-    # optional
-    env = Dict(item_fn=lambda (k, v): (k, v if v is None else str(v)),
-               value_type=(basestring,int,Path,type(None))),
-    cwd = Single(Path, jsonish_fn=str, required=True),
-
-    stdout = Single(Placeholder, required=False),
-    stderr = Single(Placeholder, required=False),
-    stdin = Single(Placeholder, required=False),
-
-    allow_subannotations = Single(bool, required=False),
-
-    trigger_specs = ConfigList(
-        lambda: ConfigGroup(
-            bucket=Single(basestring),
-            builder_name=Single(basestring),
-            properties=Dict(value_type=object),
-            buildbot_changes=List(dict),
-            tags=List(basestring),
-        ),
-    ),
-
-    step_test_data = Single(collections.Callable, required=False),
-
-    ok_ret = Set(int),
-    infra_step = Single(bool, required=False),
-    step_nest_level = Single(int, required=False),
-  )
-
-
-config_ctx = config_item_context(BaseConfig)
-
-@config_ctx()
-def test(c):  # pragma: no cover
-  c.name = 'test'
-  c.cmd = [Path('[CHECKOUT]', 'build', 'tools', 'cool_script.py')]