Remove an unneeded platform check in lint_test_expectations.py

Tools/Scripts/webkitpy/layout_tests/lint_test_expectations.py

 # Copyright (C) 2012 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 29 matching lines @@
 INTERRUPTED_EXIT_STATUS = signal.SIGINT + 128
 
 # This is a randomly chosen exit code that can be tested against to
 # indicate that an unexpected exception occurred.
 EXCEPTIONAL_EXIT_STATUS = 254
 
 _log = logging.getLogger(__name__)
 
 
 def lint(host, options):
-    # FIXME: Remove this when we remove the --chromium flag (crbug.com/245504).
-    if options.platform == 'chromium':
-        options.platform = None
-
     ports_to_lint = [host.port_factory.get(name) for name in host.port_factory.all_port_names(options.platform)]
     files_linted = set()
     lint_failed = False
 
     for port_to_lint in ports_to_lint:
         expectations_dict = port_to_lint.expectations_dict()
 
         for expectations_file in expectations_dict.keys():
             if expectations_file in files_linted:
                 continue
@@ skipping 73 matching lines @@
     try:
         exit_status = run_checks(host, options, stderr)
     except KeyboardInterrupt:
         exit_status = INTERRUPTED_EXIT_STATUS
     except Exception as e:
         print >> stderr, '\n%s raised: %s' % (e.__class__.__name__, str(e))
         traceback.print_exc(file=stderr)
         exit_status = EXCEPTIONAL_EXIT_STATUS
 
     return exit_status