and yes, it looks like for the solution to survive a reboot is just comment out the (only) line of /lib/udev/rules.d/40-inputattach.rules ...
#SUBSYSTEM=="tty", KERNEL=="ttyS[0-9]*", ATTRS{id}=="FUJ02e5|WACf00c", ACTION=="add|change", RUN+="/lib/udev/inputattach --daemon --baud 19200 --w8001 /dev/%k"
and yes, it looks like for the solution to survive a reboot is just comment out the (only) line of rules.d/ 40-inputattach. rules ...
/lib/udev/
#SUBSYSTEM=="tty", KERNEL= ="ttyS[ 0-9]*", ATTRS{id} =="FUJ02e5| WACf00c" , ACTION= ="add|change" , RUN+="/ lib/udev/ inputattach --daemon --baud 19200 --w8001 /dev/%k"