Remove GYP files.

ios/crnet/test/crnet_test.gyp

-# Copyright 2015 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,
-  },
-  'targets': [],
-  'conditions': [
-    # The CrNet build is ninja-only because of the hack in
-    # ios/build/packaging/link_dependencies.py.
-    ['OS=="ios" and "<(GENERATOR)"=="ninja"', {
-      'targets': [
-        {
-          'target_name': 'crnet_test',
-          'type': 'executable',
-          'dependencies': [
-            '../../../ios/crnet/crnet.gyp:crnet',
-            '../../../ios/third_party/gcdwebserver/gcdwebserver.gyp:gcdwebserver',
-            '../../../testing/gtest.gyp:gtest',
-          ],
-          'sources': [
-            'crnet_http_tests.mm',
-            'crnet_test_runner.mm',
-          ],
-          'include_dirs': [
-            '../../..',
-            '..',
-          ],
-          'link_settings': {
-          },
-        },
-      ],
-    }],
-  ],
-}