third_party/mojo: Remove python/go/dart bindings.

third_party/mojo/mojom_bindings_generator_explicit.gypi

 # 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.
 
 {
   'includes': [
     'mojom_bindings_generator_variables.gypi',
   ],
   'variables': {
     'mojom_base_output_dir':
@@ skipping 46 matching lines @@
         '<@(mojom_generated_outputs)',
       ],
       'action': [
         'python', '<@(mojom_bindings_generator)',
         '<@(mojom_files)',
         '--use_bundled_pylibs',
         '-d', '<(DEPTH)',
         '<@(mojom_import_args)',
         '-o', '<(SHARED_INTERMEDIATE_DIR)',
         '--java_output_directory=<(java_out_dir)',
-        '--dart_mojo_root=//third_party/mojo/src',
       ],
       'message': 'Generating Mojo bindings from <@(mojom_files)',
     }
   ],
   'conditions': [
     ['require_interface_bindings==1', {
       'dependencies': [
         '<(DEPTH)/third_party/mojo/mojo_public.gyp:mojo_interface_bindings_generation',
       ],
     }],
@@ skipping 34 matching lines @@
         ],
         'additional_input_paths': [
           '<@(mojom_bindings_generator_sources)',
           '<@(mojom_files)',
         ],
         'mojom_generated_sources': [ '<@(mojom_generated_outputs)' ],
       },
     }
   },
 }