rc.serial.jinja: remove 'param touch' for baudrates

Can be reverted if needed later on...

Tools/serial/rc.serial.jinja

@@ -3,11 +3,6 @@
 # serial autostart script generated with generate_serial_config.py
 
 
-# make sure all baudrates are marked as used
-param touch
-{%- for serial_device in serial_devices %} SER_{{ serial_device.tag }}_BAUD
-{%- endfor %}
-
 set PRT_F /etc/init.d/rc.serial_port
 
 {% for command in commands -%}