Remove unused android_experimental.

build/all_android.gyp

 # Copyright (c) 2012 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.
 
 # This is all.gyp file for Android to prevent breakage in Android and other
 # platform; It will be churning a lot in the short term and eventually be merged
 # into all.gyp.
 
 {
   'variables': {
@@ skipping 150 matching lines @@
       'conditions': [
         ['"<(gtest_target_type)"=="shared_library"', {
           'dependencies': [
             # Unit test bundles packaged as an apk.
             '../content/content_shell_and_tests.gyp:content_browsertests_apk',
           ],
         }],
       ],
     },  # target_name: android_builder_chromium_webrtc
     {
-      # TODO: Remove this target once bots no longer reference it.
-      'target_name': 'android_experimental',
-      'type': 'none',
-    },
-    {
       # Build the java portions of the binary size analysis tool.
       'target_name': 'binary_size_tool',
       'type': 'none',
       'dependencies': [
         '../tools/binary_size/binary_size.gyp:binary_size_java',
       ],
     },
   ],  # targets
 }