Revert of Size limit gtest collect

scripts/slave/recipe_modules/swarming/resources/collect_gtest_task.py

 #!/usr/bin/env python
 # Copyright 2014 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.
 
 import json
 import optparse
 import os
 import shutil
 import subprocess
@@ skipping 76 matching lines @@
         'some shards did not complete: %s' % as_str,
         MISSING_SHARDS_MSG % as_str)
     # Not all tests run, combined JSON summary can not be trusted.
     merged['global_tags'].add('UNRELIABLE_RESULTS')
 
   # Convert to jsonish dict.
   for key in ('all_tests', 'disabled_tests', 'global_tags'):
     merged[key] = sorted(merged[key])
   return merged
 
-OUTPUT_JSON_SIZE_LIMIT = 2e7
-
 
 def load_shard_json(output_dir, index):
   """Reads JSON output of a single shard."""
   # 'output.json' is set in swarming/api.py, gtest_task method.
   path = os.path.join(output_dir, str(index), 'output.json')
   try:
-    filesize = os.stat(path).st_size
-    if filesize > OUTPUT_JSON_SIZE_LIMIT:
-      raise ValueError()
-
     with open(path) as f:
       return json.load(f)
   except (IOError, ValueError):
     print >> sys.stderr, 'Missing or invalid gtest JSON file: %s' % path
     return None
 
 
 def merge_list_of_dicts(left, right):
   """Merges dicts left[0] with right[0], left[1] with right[1], etc."""
   output = []
@@ skipping 77 matching lines @@
           'failed to process gtest output JSON', traceback.format_exc())
 
   finally:
     shutil.rmtree(task_output_dir, ignore_errors=True)
 
   return exit_code
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))