Removes dont_embed_build_metadata in preparation for its removal.

scripts/slave/recipe_modules/chromium/config.py

 # Copyright 2013 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 pipes
 
 from recipe_engine.config import config_item_context, ConfigGroup
 from recipe_engine.config import Dict, List, Single, Static, Set, BadConf
 from recipe_engine.config_types import Path
 
@@ skipping 793 matching lines @@
   c.compile_py.clobber = False
 
 @config_ctx()
 def chromium_perf_fyi(c):
   c.compile_py.clobber = False
   if c.HOST_PLATFORM == 'win':
     c.compile_py.compiler = None
     c.compile_py.goma_dir = None
     c.gyp_env.GYP_DEFINES['use_goma'] = 0
 
-@config_ctx()
-def chromium_deterministic_build(c):
-  c.gyp_env.GYP_DEFINES['dont_embed_build_metadata'] = 1
-
 @config_ctx(includes=['chromium_clang'])
 def cast_linux(c):
   c.gyp_env.GYP_DEFINES['chromecast'] = 1
 
 @config_ctx()
 def internal_gles2_conform_tests(c):
   c.gyp_env.GYP_DEFINES['internal_gles2_conform_tests'] = 1