Remove GYP files.

third_party/isimpledom/isimpledom.gyp

-# Copyright (c) 2011 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.
-
-{
-  'targets': [
-    {
-      'target_name': 'isimpledom',
-      'type': 'static_library',
-      'variables': {
-        'midl_out_dir': '<(SHARED_INTERMEDIATE_DIR)/third_party/isimpledom',
-        'clang_warning_flags': [
-          # MIDL generates code like "#endif !_MIDL_USE_GUIDDEF_"
-          '-Wno-extra-tokens',
-        ],
-      },
-      'sources': [
-        'ISimpleDOMDocument.idl',
-        'ISimpleDOMNode.idl',
-        'ISimpleDOMText.idl',
-        '<(midl_out_dir)/ISimpleDOMDocument.h',
-        '<(midl_out_dir)/ISimpleDOMDocument_i.c',
-        '<(midl_out_dir)/ISimpleDOMNode.h',
-        '<(midl_out_dir)/ISimpleDOMNode_i.c',
-        '<(midl_out_dir)/ISimpleDOMText.h',
-        '<(midl_out_dir)/ISimpleDOMText_i.c',
-      ],
-      'hard_dependency': 1,
-      'direct_dependent_settings': {
-        'include_dirs': [
-          '<(SHARED_INTERMEDIATE_DIR)',
-        ],
-      },
-      'msvs_settings': {
-        'VCMIDLTool': {
-          'GenerateTypeLibrary': 'false',
-          'OutputDirectory': '<(midl_out_dir)',
-        },
-      },
-    },
-  ],
-}