Remove fling, deftserver (used only by fling), and commons-codec

dart.gyp

 # Copyright (c) 2011, 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.
 
 {
   'variables': {
     # These variables are used in the creation of the .vcproj file on 
     # Windows.
     'cygwin_dir': 'third_party/cygwin',
   },
@@ skipping 89 matching lines @@
             '<(PRODUCT_DIR)/upload_sdk',
           ],
           'action': [
             'python',
             'tools/upload_sdk.py',
             '<(PRODUCT_DIR)/dart-sdk'
           ],
         },
       ],
     }
-    # TODO(ngeoffray): Fling does not have proper dependencies,
-    # so don't build it for now.
-    #{
-    #  'target_name': 'client',
-    #  'type': 'none',
-    #  'dependencies': [
-    #    'client/dart.gyp:fling',
-    #  ],
-    #},
   ],
 }