def remove_existing_pidfile(pidfile_path):
try:<EOL><INDENT>os.remove(pidfile_path)<EOL><DEDENT>except OSError as exc:<EOL><INDENT>if exc.errno == errno.ENOENT:<EOL><INDENT>pass<EOL><DEDENT>else:<EOL><INDENT>raise<EOL><DEDENT><DEDENT>
Remove the named PID file if it exists.

        Removing a PID file that doesn't already exist puts us in the
        desired state, so we ignore the condition if the file does not
        exist.