Remove locale files not needed by sync_unit_tests.

sync/sync_unit_tests.isolate

 # 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.
 {
   'conditions': [
-    ['OS=="android"', {
-      'variables': {
-        'files': [
-          '<(PRODUCT_DIR)/locales/en-US.pak',
-        ],
-      },
-    }],
     ['OS=="linux" or OS=="mac" or OS=="win"', {
       'variables': {
         'command': [
           '../testing/test_env.py',
           '<(PRODUCT_DIR)/sync_unit_tests<(EXECUTABLE_SUFFIX)',
           '--brave-new-test-launcher',
           '--test-launcher-bot-mode',
           '--asan=<(asan)',
           '--msan=<(msan)',
           '--tsan=<(tsan)',
         ],
         'files': [
           '../chrome/test/data/sync/',
           '../net/tools/testserver/',
           '../testing/test_env.py',
           '../third_party/pyftpdlib/',
           '../third_party/pywebsocket/',
           '../third_party/tlslite/',
           '<(PRODUCT_DIR)/pyproto/google/',
         ],
       },
     }],
   ],
   'includes': [
     '../base/base.isolate',
   ],
 }