Remove obsolete patching step from runtime callstats.html

tools/callstats.py

 #!/usr/bin/env python
 # Copyright 2016 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 '''
-Usage: runtime-call-stats.py [-h] <command> ...
+Usage: callstats.py [-h] <command> ...
 
 Optional arguments:
   -h, --help  show this help message and exit
 
 Commands:
   run         run chrome with --runtime-call-stats and generate logs
   stats       process logs and print statistics
   json        process logs from several versions and generate JSON
   help        help information
 
@@ skipping 612 matching lines @@
     args.error("use either option --sites-file or site URLs")
     sys.exit(1)
   elif args.command == "run" and not coexist(args.replay_wpr, args.replay_bin):
     args.error("options --replay-wpr and --replay-bin must be used together")
     sys.exit(1)
   else:
     args.func(args)
 
 if __name__ == "__main__":
   sys.exit(main())