Revert "Use remove_build_metadata.py on all the trybots (take 2)."

scripts/slave/recipes/chromium_trybot.py

 # Copyright 2013 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.
 
 DEPS = [
   'bot_update',
   'chromium',
   'chromium_tests',
   'gclient',
   'isolate',
@@ skipping 904 matching lines @@
         # TODO(phajdan.jr): Set failed tryjob result after recognizing infra
         # compile failures. We've seen cases of compile with patch failing
         # with build steps getting killed, compile without patch succeeding,
         # and compile with patch succeeding on another attempt with same patch.
       except api.step.StepFailure:
         api.tryserver.set_transient_failure_tryjob_result()
         raise
       raise
 
     if bot_config.get('use_isolate') or has_swarming_tests:
-      # Remove the build metadata from the binaries. Currently it's a noop on
-      # all platforms except Windows where it run zap_timestamp.exe on all the
-      # PE images.
-      api.isolate.remove_build_metadata()
+      # TODO(sebmarchand): remove_build_metadata, http://crbug.com/314403 .
       # Isolate all prepared targets, will look for *.isolated.gen.json files.
       api.isolate.isolate_tests(api.chromium.output_dir, verbose=True)
 
     if bot_config['compile_only']:
       tests = []
 
     return tests, bot_update_step
 
   mastername = api.properties.get('mastername')
   buildername = api.properties.get('buildername')
@@ skipping 659 matching lines @@
             'test': 'base_tests',
             'args': ['--gtest-filter: *NaCl*.*'],
           },
         ],
       })
     ) +
     api.override_step_data(
       'analyze',
       api.json.output({'invalid_targets': 'invalid target'}))
   )