mojo: Fix dependency for building python bindings.

third_party/cython/cython_compiler.gypi

 # Copyright 2014 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': {
     'python_flags': '<(DEPTH)/third_party/cython/python_flags.py',
   },
   'conditions': [
     ['OS=="mac"', {
@@ skipping 42 matching lines @@
   ],
   'cflags': [
     '-Wno-unused-function',
   ],
   'xcode_settings': {
     'WARNING_CFLAGS': [ '-Wno-unused-function' ],
   },
   'library_dirs': [
     '<!@(python <(python_flags) --library_dirs)',
   ],
-  'direct_dependent_settings': {
-    'variables': {
-      'python_binary_modules': [
-        '<(python_cython_module)<(module_suffix)=<(module_prefix)<(_target_name)<(module_suffix)',
-      ],
-    },
-  },
   'hard_dependency': 1,
 }