Remove 'pkg' from the default list of test suites

tools/bots/gn_tests.py

 #!/usr/bin/env python
 #
 # Copyright (c) 2016, 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.
 
 import os
 import os.path
 import shutil
 import sys
 import subprocess
 
 SCRIPT_DIR = os.path.dirname(sys.argv[0])
 DART_ROOT = os.path.realpath(os.path.join(SCRIPT_DIR, '..', '..'))
 
 def main(argv):
   test_py = os.path.join(DART_ROOT, 'tools', 'test.py')
   build_result = subprocess.call(
-      ['python', test_py, '--builder-tag=no_ipv6', '--exclude-suite=pkg']
+      ['python', test_py, '--builder-tag=no_ipv6']
       + argv[1:])
   if build_result != 0:
     return build_result
   build_result = subprocess.call(
       ['python', test_py, '--builder-tag=no_ipv6',
        '-cdart2js', '-rd8', '--use-sdk', 'language/first']
       + argv[1:])
   if build_result != 0:
     return build_result
   build_result = subprocess.call(
       ['python', test_py, '--builder-tag=no_ipv6',
        '-cdart2analyzer', '-rnone', '--use-sdk', 'language/first']
       + argv[1:])
   if build_result != 0:
     return build_result
   return 0
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))