Remove old cloud policy code.

chrome/app/policy/cloud_policy_codegen.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'chromium_code': 1,
     'policy_out_dir': '<(SHARED_INTERMEDIATE_DIR)/policy',
     'protoc_out_dir': '<(SHARED_INTERMEDIATE_DIR)/protoc_out',
     'generate_policy_source_script_path':
@@ skipping 91 matching lines @@
     },
     {
       'target_name': 'policy_proto_compile',
       'type': 'static_library',
       'sources': [
         '<(proto_rel_path)/chrome_device_policy.proto',
         '<(proto_rel_path)/chrome_extension_policy.proto',
         '<(proto_rel_path)/device_management_backend.proto',
         '<(proto_rel_path)/device_management_local.proto',
         '<(proto_rel_path)/install_attributes.proto',
-        '<(proto_rel_path)/old_generic_format.proto',
       ],
       'variables': {
         'proto_in_dir': '<(proto_rel_path)',
         'proto_out_dir': '<(proto_path_substr)',
       },
       'dependencies': [
         'cloud_policy_code_generate',
       ],
       'includes': [ '../../../build/protoc.gypi' ],
     },
@@ skipping 64 matching lines @@
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
         },
       ],
     }],
   ],  # 'conditions'
 }