Revert "Add dev_compiler to the SDK build process."

utils/dartdevc/dartdevc.gyp

-# Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
-# for details. 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': 'dartdevc',
-      'type': 'none',
-      'dependencies': [
-        '../../runtime/dart-runtime.gyp:dart',
-        '../../pkg/pkg.gyp:pkg_packages',
-      ],
-      'actions': [
-        {
-          'action_name': 'generate_dartdevc_snapshot',
-          'inputs': [
-            '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)dart<(EXECUTABLE_SUFFIX)',
-            '../../sdk/lib/_internal/sdk_library_metadata/lib/libraries.dart',
-            '<(SHARED_INTERMEDIATE_DIR)/packages.stamp',
-            '<!@(["python", "../../tools/list_files.py", "\\.dart$", "../../third_party/pkg/dev_compiler"])',
-            '<!@(["python", "../../tools/list_files.py", "\\.dart$", "../../pkg/analyzer"])',
-          ],
-          'outputs': [
-            '<(SHARED_INTERMEDIATE_DIR)/dartdevc.dart.snapshot',
-          ],
-          'action': [
-            '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)dart<(EXECUTABLE_SUFFIX)',
-            '--snapshot=<(SHARED_INTERMEDIATE_DIR)/dartdevc.dart.snapshot',
-            '--package-root=<(PRODUCT_DIR)/packages/',
-            '../../third_party/pkg/dev_compiler/bin/dartdevc.dart'
-          ],
-        },
-      ],
-    },
-  ],
-}