Looks like all you have to do is comment it out and put in a pass statement (in bold below):

(excerpt from file on the posbox: /home/pi/odoo/addons/hw_escpos/controllers/main.py -Line 177 has call to comment)

Make sure to indent the pass with 4 spaces to align with old function call position.

elif task == 'xml_receipt':
    if timestamp >= time.time() - 1 * 60 * 60:
        printer.receipt(data)
elif task == 'cashbox':
    if timestamp >= time.time() - 12:
        self.open_cashbox(printer)
elif task == 'printstatus':
    #self.print_status(printer)
    pass
elif task == 'status':
    pass
error = False